lh2h product types 1. panel mounting type 1) one-touch installation type 1 standard type din half size hour meter lh2h hour meters no. digits measurement time range front reset input method part no. 7 digits 0 to 999999.9h/0 to 3999d23.9h switchable ye s non-voltage input type lh2h-fe-dhk 0 to 999h59m59s/0 to 9999h59.9m switchable lh2h-fe-hmk 0 to 999999.9h/0 to 3999d23.9h switchable voltage input type (4.5 to 30 v dc) LH2H-FE-DHK-DL 0 to 999h59m59s/0 to 9999h59.9m switchable lh2h-fe-hmk-dl 0 to 999999.9h/0 to 3999d23.9h switchable free voltage input type (24 to 240 v ac/dc) lh2h-fe-dhk-fv 0 to 999h59m59s/0 to 9999h59.9m switchable lh2h-fe-hmk-fv panel mounting type one-touch installation type panel mounting type installation frame type pc board mounting type features 1. 8.7 mm character height (previously 7 mm .343 inch ) easy-to-read character height increased from 7 mm to 8.7 mm .276 inch to .343 inch . 2. plenty of digits 3. select by switch between two time ranges in a single meter. 0 to 999999.9h/0 to 3999d23.9h switchable 0 to 999h59m59s/0 to 9999h59.9m switchable 4. panel mounting type features 2 installation methods comes with very easy one-touch installation type and also installation frame type that uses the frame on the timer/counter. choose a method that suits the application. 5. battery replacement easy on environment to replace battery simply remove body for the one-touch installation type, and remove battery lid for the installation frame type. 6. screw terminals designed for safety built in ?ger protection. 7. panel covers replacable (standard color is ash gray.) change the panel design by replacing with a black panel cover. 8. conforms to ip66 protective construction (only installation frame type.) (front panel surface) 9. input methods 1) non-voltage input method 2) voltage input method 3) free voltage input method 10. backlight type added to series and now 2-color switchable (green/ red) easy viewing even in dark places and switchable between green and red (voltage input type). 11. compliant with ul, c-ul and ce marking. rohs directive compatibility information http://www.nais-e.com/ 8.7mm .343inch 7 digits product chart type installation type standard type backlight type non-voltage input type voltage input type (4.5 to 30 v dc) free voltage input type (24 to 240 v ac/dc) voltage input type (4.5 to 30 v dc) panel mounting type one-touch installation type installation frame type pc board mounting type all rights rese r v ed c o p y r i gh t matsushita elect r ic w o r k s , ltd.
lh2h 2 backlight type 2) installation frame type 1 standard type 2 backlight type 2. pc board mounting type speci?ations no. digits measurement time range front reset input method part no. 7 digits 0 to 999999.9h/0 to 3999d23.9h switchable ye sv oltage input type (4.5 to 30 v dc) LH2H-FE-DHK-DL-b 0 to 999h59m59s/0 to 9999h59.9m switchable lh2h-fe-hmk-dl-b no. digits measurement time range front reset input method part no. 7 digits 0 to 999999.9h/0 to 3999d23.9h switchable ye s non-voltage input type lh2h-f-dhk 0 to 999h59m59s/0 to 9999h59.9m switchable lh2h-f-hmk 0 to 999999.9h/0 to 3999d23.9h switchable voltage input type (4.5 to 30 v dc) lh2h-f-dhk-dl 0 to 999h59m59s/0 to 9999h59.9m switchable lh2h-f-hmk-dl 0 to 999999.9h/0 to 3999d23.9h switchable free voltage input type (24 to 240 v ac/dc) lh2h-f-dhk-fv 0 to 999h59m59s/0 to 9999h59.9m switchable lh2h-f-hmk-fv no. digits measurement time range front reset input method part no. 7 digits 0 to 999999.9h/0 to 3999d23.9h switchable ye sv oltage input type (4.5 to 30 v dc) lh2h-f-dhk-dl-b 0 to 999h59m59s/0 to 9999h59.9m switchable lh2h-f-hmk-dl-b no. digits measurement time range front reset input method part no. 7 digits 0 to 999999.9h no non-voltage input type lh2h-c-h-n 0 to 9999h59.9m lh2h-c-hm-n 1. panel mounting type note) only for installation frame type. type item standard type backlight type standard type non-voltage input voltage input free voltage type no. digits 7 digits external power supply not required (built-in battery) measurement time range 0 to 999999.9h/0 to 3999d23.9h (switchable by switch) 0 to 999h59m59s/0 to 9999h59.9m (switchable by switch) separate product type start input min. input signal width 200 ms input method (signal) non-voltage input using contacts or open collector connection high level: 4.5 to 30 v dc low level: 0 to 2 v dc high level: 24 to 240 v ac/dc low level: 0 to 2.4 v ac/dc input impedance when shorted: max. 10 k ? when open: max. 750 k ? approx. 4.7 k ? residual voltage max. 0.5 v reset input min. input signal width 100 ms input method (signal) non-voltage input using contacts or open collector connection high level: 4.5 to 30 v dc low level: 0 to 2 v dc non-voltage input using contacts or open collector connection input impedance when shorted: max. 10 k ? when open: max. 750 k ? appox. 4.7 k ? when shorted: max. 10 k ? when open: max. 750 k ? residual voltage max 0.5 v max. 0.5 v display method 7-segment lcd 7-segment lcd with green/red backlight 7-segment lcd breakdown voltage (initial) between charged and uncharged parts: 1,000 v ac for 1 minute. between charged and uncharged parts: 2,000 v ac for 1 minute. insulation resistance (initial) min. 100 m ? (measured at 500 v dc) measurement location same as for break down voltage. backlight power 24 v dc (?0%) protective construction (note) iec standard ip66 (only panel front: when using rubber gasket) accessories (note) rubber gasket, mounting bracket battery life 10 years (at 25? 77? ) all rights rese r v ed c o p y r i gh t matsushita elect r ic w o r k s , ltd.
lh2h applicable standard safety standard en61010-1 pollution degree 2/overvoltage category iii emc (emi)en61000-6-4 radiation interference electric ?ld strength noise terminal voltage (ems)en61000-6-2 static discharge immunity rf electromagnetic ?ld immunity eft/b immunity conductivity noise immunity pow er frequency magnetic ?ld immunity en55011 group1 classa en55011 group1 classa en61000-4-2 4 kv contact 8 kv air en61000-4-3 10 v/m am modulation (80 mhz to 1 ghz) 10 v/m pulse modulation (90 mhz) en61000-4-4 2 kv (power supply line) en61000-4-6 10 v/m am modulation (0.15 mhz to 80 mhz) en61000-4-8 30 a/m (50 hz) 2. pc board mounting type 3. common type item pc board mounting type input method non dc voltage input no. digits 7 digits rated operation voltage 3 v dc allowable operation voltage range 2.7 to 3.3 v dc current consumption max. 20 ? (max. 200 ? during reset input) measurement time range 0 to 999999.9h 0 to 9999h59.9m start input min. input signal width 200 ms input method non-voltage input using contacts or open collector connection input impedance when shorted: max. 10 k ? when open: max. 750 k ? residual voltage max. 0.5 v reset input min. input signal width 10 ms input method non-voltage input using contacts or open collector connection input impedance when shorted: max. 10 k ? when open: max. 750 k ? residual power max. 0.5 v break down voltage (initial) between charged and uncharged parts: 1,000 v ac for 1 minute. insulation resistance (initial) min. 100 m ? (measured at 500 v dc) measurement location same as for break down voltage. type item panel mounting/pc board mounting types time accuracy ?00 ppm (25? 77? ) vibration resistance functional 10 to 55 hz (1 cycle/min.), single amplitude: 0.15 mm (10 min. on 3 axes) destructive 10 to 55 hz (1 cycle/min.), single amplitude: 0.375 mm (1 hr. on 3 axes) shock resistance functional min. 98 m/s 2 (4 times on 3 axes) destructive min. 294 m/s 2 (5 times on 3 axes) operation temperature ?0 to +55? +14 to +131? (without frost or dew) storage temperature ?5 to +65? ?3 to +149? (without frost or dew) ambient humidity 35 to 85% rh (non-condensing) all rights rese r v ed c o p y r i gh t matsushita elect r ic w o r k s , ltd.
lh2h pa rt names 1. front reset button reset the elapsed time. it does not work when the lock switch is on. be aware that battery life will decrease if this switch is used frequently. 2. lock switch (refer to chart on right.) disable the front reset button. note) turn on at the lcd side (reset disabled) and off at the terminal block side (reset enabled). 3. time range switch (see chart on right). switch the time range. note) always press the front reset button when operating the time range switch. 4. time unit sticker unit seals are included in the package. af? them in accordance with the time range. notes) 1. ? default setting when shipped. 2. make the switch setting before installing to panel. 0 to 999999.9h/0 to 3999d23.9h 0 to 999h59m59s/0 to 9999h59.9m lock switch (unit display 1) count speed switch (unit display 2) time range switch lock switch reset hms hour meter lh2h time unit seal front reset button (terminal block side) (lcd side) off ? on (terminal block side) (lcd side) 0 to 999999.9h ? 0 to 3999d23.9h (terminal block side) (lcd side) 0 to 9999h59.9m ? 0 to 999h59m59s dimensions 1. panel mounting type ?external dimensions 1) one-touch installation type mm inch general tolerance: 1.0 .039 ?panel installation diagram note) when installing to a 4.5 mm .177 inch thick panel, remove the rubber spacer ?st. when installing the one-touch installation type model, make sure that the installation spring does not pinch the rubber gasket. to prevent the installation spring from pinching the rubber gasket: 1. set the rubber gasket on both ends of the installation spring (left and right). 2. con?m that the installation spring is not pinching the rubber gasket, and then insert and ? the installation spring in place from the rear of the timer unit. hour meter lh2h reset 44.8 1.764 54.4 2.142 48 1.890 5 .197 (44) (1.732) 10.4 .409 7 .276 22 .866 24 .945 reset button m3.5 m.138 rubber spacer panel (1 to 4.5mm .039 to .177inch thickness) all rights rese r v ed c o p y r i gh t matsushita elect r ic w o r k s , ltd.
lh2h ?terminal layout and wiring diagrams 1) standard type 2) backlight type non voltage input type voltage input type free voltage input type voltage input type 2) installation frame type ?panel mounting diagram hour meter lh2h reset 44.8 1.764 54.4 2.142 5 .197 44 1.732 10.4 .409 7 .276 22 .866 48 1.890 24 .945 reset button m3.5 m.138 37 1.457 mounting screws (found on mounting bracket) mounting frame ath3803 (included) rubber gasket ath3804 (included) panel (1 to 4.5mm .039 to .177inch thickness) ?panel cut-out dimensions the standard panel cut-out is shown below. use the mounting frame (ath3803) and the rubber packing (ath3804). (only installation frame type.) ?for connected installation (sealed installation) (only installation frame type.) notes) 1. suitable installation panel thickness is 1 to 4.5 mm .039 to .177 inch . 2. waterproo?g will be lost when installing repeatedly (sealed installation). 45 1.772 + 0.5 0 + .020 0 22.2 .874 + 0.5 0 + .020 0 60 min. 2.362 min. 22.2 .874 + 0.5 0 + .020 0 a=(48 n-2.5) a=(1.890 n-.098) a + 1.0 0 + .039 0 w - r are connected internally. start input 2 14 3 reset input +v 0v +v 0v 2 14 3 start input reset input 21or 43 start input reset input backlight +v0v +v0v +v 0v +v 0v start input reset input 12 5 6 34 12 5 6 34 12 5 6 34 all rights rese r v ed c o p y r i gh t matsushita elect r ic w o r k s , ltd.
lh2h input method 1. standard type notes) 1. when using contact input, since current ?w is small from terminals 1 and 3 on the panel mounting type and terminals e to t and s to f on the pc board mounting type, please use relays and switches with high contact reliability. 2. when using transistor input, use the following as a guide for which transistors (tr) to use for inputting. (collector withstand voltage q 50 v, leakage current < 1 ?) notes) 1. 2 and 4 . (the input and reset circuits are functionally insulated.) 2. when using transistor (tr) input, use the right as a guide. (collector withstand voltage q 50 v, leakage current < 1 ?) 3. be aware that the application of voltage that exceeds the voltage range of the h level to the count input terminal, and the application of voltage to the reset input terminal, can cause damage to the internal elements. non-voltage input type panel mounting type pc board mounting type contact input tr ansistor input contact input tr ansistor input npn transistor npn transistor voltage input type free voltage input type contact input tr ansistor input npn transistor pnp transistor 2. pc board mounting type ?external dimensions ?terminal layout and wiring diagrams general tolerance: 1.0 .039 mm inch pc board pattern (bottom view) general tolerance: 0.1 .004 note: the axs212811k is recommended as a compatible connection socket. lh2h hour meter 33.02 0.3 1.300 .012 43.4 1.709 17.3 .681 dip switch 8 19 .748 15.24 0.3 .600 .012 3.3 0.3 .130 .012 5.08 0.3 .200 .012 0.5 0.3 .020 .012 0.3 0.1 .012 .004 5.08 0.3 .200 .012 0.6 0.1 .024 .004 q - e , } - w , e - t and s - f are connected internally. an external power supply is required. reset inputstart input 15 17 26 28 14 12 3 1 15.24 .600 33.02 1.300 1.9 .075 1.9 .075 5.19 .204 2.54 .100 2.54 .100 8-0.8 dia. 8-.031 dia. 5.08 .200 5.08 .200 5.19 .204 mounting area connection sockets 28 pin dip terminal 12 3 4 reset input start input ( w and r are connected internally.) 12 34 0v 0v ( w and r are connected internally.) reset input start input reset input start input 3v dc 15 17 14 12 26 28 3 1 reset input start input 3v dc 15 17 14 12 26 28 3 1 reset input start input 12 34 12 34 reset input start input +v +v reset input start input 12 34 +v +v 12 34 or or or reset input start input all rights rese r v ed c o p y r i gh t matsushita elect r ic w o r k s , ltd.
all rights rese r v ed c o p y r i gh t matsushita elect r ic w o r k s , ltd. lh2h 2. backlight type notes) 1. do not reverse the polarities when connecting the dc voltage for the backlight. 2. 2 and 4 . (the input and reset circuits are functionally insulated.) 3. when using transistor (tr) input, use the right as a guide. (collector withstand voltage q 50 v, leakage current < 1 ?) 4. be aware that the application of voltage that exceeds the voltage range of the h level to the count input terminal, and the application of voltage to the reset input terminal, can cause damage to the internal elements. explanation of operation voltage input type backlight connection contact input tr ansistor input npn transistor pnp transistor reset input start input 12 34 5 6 12 34 reset input start input +v +v 12 34 5 6 reset input start input +v +v 12 34 green red 24v dc 24v dc 5 6 12 34 5 6 1. time measuring takes place when the start input is on. 2. when the elapsed (measured) time reaches full scale it returns to ?? and then measuring starts again from ?? 3. when reset input is on, the display becomes ?? you cannot measure during reset input. for pc board mounting type the display disappears while the reset input is on; however, the display reads ? when the reset input turns off. 4. press the front reset button if you want to perform a manual reset (for panel installation type) reset input full scale elapsed time pc board type start input on off off on on 0
lh2h cautions for use 1. non-voltage input type for both panel mounting and pc board mounting types 1) never apply voltage to the non-voltage input type. this will damage the internal elements. 2) since the current ?w is very small from the start input and reset input terminals ( 1 and 3 on the panel mounting type and terminals e to t and s to f on the pc board mounting type) please use relays and switches with high contact reliability. when inputting with an open collector of a transistor, use a transistor for small signals in which icbo is 1 ? or less and always input with no voltage. 3) when wiring, try to keep all the input lines to the start and reset inputs as short as possible and avoid running them together with high voltage and power transmission lines or in a power conduit. also, malfunctions might occur if the ?ating capacitance of these wires exceeds 500 pf (10 m 32.808 ft. for parallel wires of 2 mm 2 ). in particular, when using shielded wiring, be careful of the capacitance between wires. pc board mounting type 1) for external power supply use manganese dioxide or lithium batteries (cr type: 3v). 2) always reset after external power is applied and con?m that the display reads ?? 3) make the wiring from the battery to the hour meter unit as short as absolutely possible. also, be careful of polarity. 4) calculate battery life with the following fo rm ula. t = a/i t: battery life [h] i: lh2h current consumption [ma] a: battery capacity until minimum operation voltage is reached [mah] 5) hand solder to the lead terminal. do not dip solder. with the tip of the soldering iron at 300? 572? perform soldering within 3 seconds (for 30 to 60 w soldering iron). 2. voltage input type 1) be aware that applying more than 30 v dc to start input terminals 1 and 2 , and reset input terminals 3 and 4 will cause damage to the internal elements. 2) for external resetting use h level (application of 4.5 to 30 v dc) between reset terminals 3 and 4 of the rear terminals. in this case, connect + to terminal 3 and ?to terminal 4 . this is the valid polarity; therefore, the hour meter will not work if reversed. 3) when wiring, try to keep all the input lines to the start and reset inputs as short as possible and avoid running them together with high voltage and power transmission lines or in a power conduit. also, malfunctions might occur if the ?ating capacitance of these wires exceeds 500 pf (10 m 32.808 ft. for parallel wires of 2 mm 2 ). 3. free voltage input type 1) use start input terminals 1 and 2 for free voltage input and reset terminals 3 and 4 for non-voltage input. 2) be aware that the application of v oltage that exceeds the voltage range of the h level to the start input terminal, and the application of voltage to the reset input terminal, can cause damage to the internal elements. 3) since the current ?w is very small from reset input terminal 3 , please use relays and switches with high contact reliability. 4) when inputting a reset with an open collector of a transistor, use a transistor f or small signals in which icbo is 1 ? or less and always input with no voltage. 5) to reset externally, short reset input terminals 3 and 4 on the rear. 6) input uses a high impedance circuit; therefore, erroneous operation may occur if the in?ence of induction voltage is present. if you plan to use wiring for the input signal that is 10 m or longer (wire capacitance 120 pf/m at normal temperature), we recommend the use of a cr ?ter or the connection of a bleeder resistor. 4. how to reset multiple panel mounting type counters all at once (input is the same for count) non-voltage input type notes) 1. use the following as a guide for choosing transistors used for input (tr). leakage current < 1 ? 2. use as small a diode (d) as possible in the f orward voltage so that the voltage between terminals 3 and 4 during reset input meets the standard value (0.5 v). ( at if = 20 ?, forward voltage 0.1 and higher.) voltage input type note) make sure that h (reset on) level is at least 4.5 v. 5. backlight luminance to prevent varying luminance among backlights when using multiple backlight types, please use the same backlight power supply. 6. acquisition of ce marking please abide by the conditions below when using in applications that comply with en 61010-1/iec 61010-1 1) ambient conditions ?overvoltage category ii, pollution level 2 ?indoor use ?acceptable temperature and humidity range: ?0 to +55?, 35 to 85%rh (with no condensation at 20?) ?under 2000 m elevation 2) use the main unit in a location that matches the following conditions. ?there is minimal dust and no corrosive gas. ?there is no combustible or explosive gas. ?there is no mechanical vibration or impacts. ?there is no exposure to direct sunlight. ?located away from large-volume electromagnetic switches and power lines with large electrical currents. 3) connect a breaker that conforms to en60947-1 or en60947-3 to the voltage input section. 4) applied voltage should be protected with an overcurrent protection device (example: t 1a, 250 v ac time lag fuse) that conforms to the en/iec standards. (free voltage input type) 7. terminal connection tighten the terminal screws with a torque of 0.8 n?m or less. 3 or d tr 4 3 4 3 4 d d 3 or +v +v r tr 4 3 4 3 4 3 4 2 2 5 2 green red 5 6 2 6 24v dc 24v dc all rights rese r v ed c o p y r i gh t matsushita elect r ic w o r k s , ltd.
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