frk optical signal converter functional specifications optical/electrical conversion output signal: 4 to 20ma dc (allowable load 600 ? ) electrical/optical conversion input signal: 1 to 5v dc (input resistance 1m ? or more) 4 to 20ma dc (input resistance 150 ? or less) (none) 10 to 50ma dc (input resistance 80 ? or less) note) the power for a 2-wire type transmitter and converter for 4 to 20ma dc can also be supplied (supply voltage about 20v dc). power supply: 24v dc (20 to 30v) or 24, 100, 115, 220v ac ( 10%), 50/60hz the optical signal converter performs conversion be- tween optical and electrical signals of ffi system speci- fications, and serves as an interface when connecting a detector or controlled element of an electronic instru- mentation system to the ffi system. this is a high-precision intelligent instrument with a built-in microcomputer for digital processing of signals. optical fiber is used in the signal transmission section which enables forming an optical fiber type field instru- mentation system (ffi system) together with optical star coupler and master station. 1. bidirectional transmission system transmission of measured data and fault diagnosis data to the host computer and remote settings etc. from the host is done bidirectionally via a signal optical fiber cable. 2. easy adjustment and setting operation adjustment and settings can be made easily via remote operation from the host computer or by key switches on the indicating unit (option). 3. self-diagnosis function a number of self-diagnoses are possible by the built- in microcomputer. 4. digital display type field indicator available at option. 5. flame-proof structure (d2g4) can be provided at option. power consumption: about 4w (dc power supply) or about 8va (ac power supply) setting: damping time constant up to 17 sec optical/electrical conversion output 0% and 100% calibration, readback 0% and 100% calibration electrical/optical conversion output 0% and 100% calibration self-diagnosis: input overflow/underflow, micro- computer fault, battery down (for memory backup) optical/electrical d/a converter fault external line disconnection fault display (option): optical/electrical converter readback value (0 to 100%) electrical/optical conversion i nput value (0 to 100%) symbols and numerals for above setting items symbols for above diagnosis items only at fault occurrence but microcomputer fault is not displayed since it is normalized through auto reset action. ambient temperature: ?0 to 60 c ambient humidity: 95% r.h. or less transmission: half-duplex bidirectional transmission with one-fiber system transmission distance; 1.2 km max. data sheet ffi system specifications features date EDS9-44E dec. 30, 1987
frk 2 other: optical output alone can be provided by combining the electrical/optical converter with an optical receiving converter (type prn). in this case the transmission distance is 4 km max. performance specifications accuracy rating: 0.2% repeatability: 0.1% ripple content: 1% p? (optical electrical converter output current) insulation: (in arrester exclusion status) between power supply and signals insulation resistance; 500m ? or more (with 500v dc megger) withstand voltage; 1000v ac for 1 minute between power supply and ground insulation resistance; 500m ? or more (with 500v dc megger) withstand voltage; 1000v ac for 1 minute between signals and ground insulation resistance; 500m ? or more (with 500v dc megger) withstand voltage; 500v ac for 1 minute structure and material finish: epoxy/polyurethane double coating, silver (cover; blue) enclosure: jis c 0920 immersion-proof (equivalent to iec ip65 or nema 4) outer dimensions (h x w x d) and mass (weight): 161 x 172 x 212 (240) mm, about 4.0 kg parenthesized dimension is when display unit equipped. mounting method: mounted by u bolt on horizontal or vertical 50a (2b) pipe, or wall mounted cable and connection method: jis g1/2 internal thread (terminals: m4 screw) optical fiber cable is fuji-specified one (prepare separately) connection is made by optical connector. optical specifications indication unit: 6-digit lcd unit with setting key (4 pushbutton switches) acid and alkali-proof treatment: mounting u bolt and nuts material: sus304 code symbols 1 k r f- 10 2 1 345678 9 11 description y a b c 0 2 1 3 4 1 2 3 4 5 a b 1 2 3 input/output signals ffi optical signal/4 to 20ma dc (unusable with 2, 3 in 4th digit) 1 to 5v dc/ ffi optical signal (unusable with 1, 3 in 4th digit) 4 to 20ma dc/ ffi optical signal (unusable with 1 in 4th digit) 10 to 50ma dc/ ffi optical signal (unusable with 1, 3 in 4th digit) indicating unit none equipped power supply 24v dc 24v ac, 50/60hz 100v ac, 50/60hz 115v ac, 50/60hz 220v ac, 50/60hz arrester none equipped kind optical/electrical conversion electrical/optical conversion electrical/optical conversion transmitter power supply built in enclosure immersion-proof case, non-explosion-proof flame-proof case (conduit flame-proof screw coupling type) flame-proof case (flame-proof packing type) y b treatment none acid/alkali-proof processing
3 outline diagram (unit : mm) 172 212 (28) 109 53 105 60 161 45 173 73 152 129 152 100 47 70 119 108 15 g1/2 (jis) m8 u bolt mounting pipe jis50a (2b) indicating unit (optional specification) optical connection pipe mouting details of a wall mouting indicating unit (optional specification) conduit cnnection (see "details of a") 5 16
frk 4 operating principle diagram system block diagram indicating unit (option) display setting optical unit optical connector dc 4 to 20ma output circuit readback circuit -com display unit (option) display setting optical unit input circuit optical connector dc 1 to 5v 4 to 20ma 10 to 50ma -com electrical signal power supply power supply electrical signal signal converter frk electrical signal power supply power supply signal converter(e/o) optical fiber, 8 lines max. optical fiber, 4 lines max. master station pmt,pmh optical star coupler fxn frk 2 3 optical fiber cable optical receiving converter prn output signal dc 1 to 5v or dc 4 to 20ma optical/electrical converter electrical/optical converter
5 external connection diagram note 1. o/e converter current can be checked at the ck (check) terminal and "0+" terminal connect the "+" side of the check current ammeter (internal resistance is less than 10 ? ) to ck and the " " side to "+0". 2. e/o converter current input can be checked at ck and i terminals. connect the "+" side of the check current ammeter to ck and the " " side to i . (internal resistance of 4 to 20ma check current ammeter is less than 10 ? and that of 10 to 50ma check current ammeter is less than 4 ? ). scope of delivery converter and mounting bracket related devices master station (data sheet no. eds11-86) optical star coupler (data sheet no. eds8-43) optical receiving converter (data sheet no. eds9-43) optical connector optical fiber cable optical connector assembling tools optical/electrical converter electrical/optical converter pc ps ck o+ o- current check terminal (note 1) current check terminal (note 2) dc 4 to 20ma pc ps ck i- i+ dc 4 to 20ma dc 10 to 50ma dc 1 to 5v power supply power supply
frk information in this catalog is subject to change without notice. printed in japan head office 6-17, sanbancho, chiyoda-ku, tokyo 102-0075, japan http://www.fesys.co.jp/eng sales div. international sales dept. no.1, fuji-machi, hino-city, tokyo, 191-8502 japan phone: 81-42-585-6201, 6202 fax: 81-42-585-6187 http: //www.fic-net.jp/eng caution on safety *before using this product, be sure to read its instruction manual in advance.
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