csm_K8AB-PH_ds_e_2_1 1 phase-sequence phase-loss relay K8AB-PH three-phase phase- sequence phase-loss relay using voltage detection method ? prevents reverse motor rotation due to incorrect wiring. ? distinguishes between positive phases, reversed phases, and phase loss when power is turned on. ? voltage detection method enables application for any load current. ? one spdt output relay, 6 a at 250 vac (resistive load). ? output status can be monitored using led indicator. refer to safety precautions for the k8ab series . refer to page 5 for the q&a section. model number structure model number legend 1. basic model k8ab: measuring and monitoring relays 2. functions ph: phase-sequence phase-loss relay 3. rated input voltage 1: 200 to 500 vac ordering information list of models note: the power supply is shared with the rated input voltage. 123 k 8 ab- @@ phase-sequence phase-loss relay functions rated input voltage (see note.) model phase sequence and phase loss monitoring 200 to 500 vac K8AB-PH1
K8AB-PH 2 ratings and specifications ratings rated input voltage three-phase, three-wire mode, 200 to 500 vac input load 15 va max. reversed phase and phase loss operating time 0.1 s max. reset method automatic reset indicators power (pwr): green, relay output (ry): yellow output relays one spdt relay (nc operation) output relay ratings rated load resistive load 6 a at 250 vac (cos = 1) 6 a at 30 vdc (l/r = 0 ms) inductive load 1 a at 250 vac (cos = 0.4) 1 a at 30 vdc (l/r = 7 ms) maximum contact voltage: 250 vac maximum contact current: 6 a ac maximum switching capacity: 1,500 va minimum load: 10 ma at 5 vdc mechanical life: 10,000,000 operations electrical life: make: 50,000 times, break: 30,000 times ambient operating temperature ? 20 to 60c (with no condensation or icing) storage temperature ? 40 to 70c (with no condensation or icing) ambient operating humidity 25% to 85% (with no condensation) storage humidity 25% to 85% (with no condensation) altitude 2,000 m max. terminal screw tightening torque 0.49 nm terminal wiring method recommended wire solid wire: 2.5 mm 2 twisted wires: awg16, awg18 note: 1. ferrules with insulating sleeves must be used with twisted wires. 2. two wires can be twisted together. recommended ferrules al 1,5-8bk (for awg16) manufactured by phoenix contact al 1-8rd (for awg18) manufactured by phoenix contact al 0,75-8gy (for awg18) manufactured by phoenix contact case color munsell 5y8/1 case material abs resin (self-extinguishing resin) ul94-v0 weight approx. 110 g mounting mounted to din track or via m4 screws (tightening torque: 1.2 nm) dimensions 22.5 (w) 90 (h) 100 (d) mm
K8AB-PH 3 specifications connections wiring diagram phase sequence and phase loss operation diagram note: 1. motor load phase loss cannot be detected. to detect motor load phase loss, use the k8ab-pm or k8ab-pa. 2. the K8AB-PH output relay is normally operative. 3. l1 and l3 function both as the power supply terminals and as input terminals. if the voltage drops below the minimum input voltage (60%), then the relay will not operate due to an undervoltage. 4. phase loss is detected based on th e phase sequence, so phase loss cannot be detected for loads that generate inductive power, e.g., due to motor during operation. 5. phase loss is detected based on voltage, so phase loss cannot be detected on the load side. input voltage range 200 to 500 vac input frequency range 45 to 65 hz overload capacity continuous input: 115% of maximum input, 10 s max.: 125% of maximum input temperature influence operating time fluctuation based on measured value at standard temperature: ? 20 c to standard temperature: 10% max. standard temperature to 60 c : 10% max. (humidity: 25% to 80%) humidity influence operating time based on ambient room humidity 25% to 80%: 10% max. influence of power supply voltage operating time: 10% max. note: the error in the operating value and operating time under standard conditions. influence of power supply frequency operating time: 10% max. (at 45 to 65 hz) note: the error in the operating value and operating time under standard conditions. influence of input frequency at 45 to 65 hz operating time 10% max. note: the error in the operating value and operating time under standard conditions. applicable standards conforming standards en60255-5 and en60255-6 installation environment (pollution degree 2, overvoltage category iii) emc en61326 safety standards ul508 insulation resistance 20 m min. between external terminals and case between input terminals and output terminals dielectric strength 2,000 vac for one minute between external terminals and case between input terminals and output terminals noise immunity 1,500 v power supply terminal common/normal mode square-wave noise of 1 s/100 ns pulse width with 1-ns rise time vibration resistance frequency 10 to 55 hz, 0.35-mm single amplitude, acceleration 50 m/s 2 10 sweeps of 5 min each in x, y, and z directions shock resistance 100 m/s 2 , 3 times each in 6 directions along three axes (up/down, left/right, forward/backward) degree of protection terminal section: finger protection l1 l2 l3 l1 l3 l2 l3 l2 l1 l1 l2 l3 relay phase loss operation phase se q uence operation inp u t load v oltage inp u t signal o u tp u t 14 12 l1 l2 l3 11 relay signal o u tp u t l1 l2 l3
K8AB-PH 4 nomenclature front indicators note: 1. the input across l1 and l3 is used for the internal power supply. therefore, the power i ndicator will not be lit if there is no input across l1 and l3. 2. use either a solid wire of 2.5 mm 2 maximum or a ferrule with insulating sleeve for the terminal connection. the length of the exposed current-carrying part inserted into the terminal must be 8 mm or less to maintain dielectric strength after connection. recommended ferrules phoenix contact ? al 1,5-8bk (for awg16) al 1-8rd (for awg18) al 0,75-8gy (for awg18) 3. tightening torque recommended: 0.49 nm maximum: 0.54 nm operation and setting methods connections 1. input connect using l1, l2, and l3. make sure the phase sequence is wired correctly. the unit will not operate normally if the phase sequence is incorrect. 2. outputs terminals 11, 12, and 14 are output terminals for spdt. dimensions (unit: mm) phase-sequence, phase-loss relays power indicator relay status indicator terminal block (see notes 1 and 2.) item meaning power indicator (pwr: green) lit when power is being supplied (see note). relay status indicator (ry: yellow) lit when relay is operating (normally lit). for 2.5 mm 2 or smaller solid wires for ferrules with insulating sleeves 8 mm max. 8 mm max. load voltage input signal output 14 12 l1 l2 l3 11 relay signal output l1 l2 l3 22.5 100 72 90 5 5 K8AB-PH1
K8AB-PH 5 checking operation phase sequence switch the wiring, as shown by the dotted lines in the connection diagram, to reverse the phase sequence and check that the k8ab operates. phase loss create a phase loss for any i nput phase and check that the k8ab operates. connection diagram can phase loss be detected on the load side? in principle, phase loss cannot be detected on the load side because the K8AB-PH1 measures three-phase voltage to determine phase loss. motor load phase loss during operation motor load phase loss cannot be detected during operation. it can be used to detect phase loss at startup. normally, three-phase motors will continue to rotate even if one phase is open. the three-pha se voltage will be induced at the motor terminals. the diagram shows voltage induction at the motor terminals when phase r has been lost with a load applied to a three-phase motor. the horizontal axis shows the motor load as a percentage of the rated load, and the vertical axis shows voltage as a percentage of the rated voltage. the lines in the graph show the voltage induced at the motor terminals for each load when phase loss occurs during operation. as the graph shows, voltage is induced at the motor terminals even if there is phase loss for a motor load, so the K8AB-PH1 cannot detect phase loss for motor loads during operation. use the K8AB-PH1 to detect phase loss at startup. characteristic curve diagram note: for phase loss of phase r. v st , v tr , and v rs indicate the motor terminal voltage at phase loss. questions and answers q l1 l1 l2 l2 l3 l3 3 , 200 vac q q 100 95 90 85 80 75 70 65 60 55 50 45 10 0 2030405060708090100110 v st v tr v rs note: this characteristic curve shows the approximate values only. voltage (as a percentage of rated voltage) motor load (as a percentage of rated load) in the interest of product improvement, specif ications are subject to change without notice. all dimensions shown are in millimeters. to convert millimeters into inches, multiply by 0.03 937. to convert grams into ounces, multiply by 0.03527.
r e a d a n d u n d e r s t a n d t h i s c a t a l o g p l e a s e r e a d a n d u n d e r s t a n d t h i s c a t a l o g b e f o r e p u r c h a s i n g t h e p r o d u c t s . p l e a s e c o n s u l t y o u r o m r o n r e p r e s e n t a t i v e i f y o u h a v e a n y q u e s t i o n s o r c o m m e n t s . w a r r a n t y a n d l i m i t a t i o n s o f l i a b i l i t y w a r r a n t y o m r o n ' s e x c l u s i v e w a r r a n t y i s t h a t t h e p r o d u c t s a r e f r e e f r o m d e f e c t s i n m a t e r i a l s a n d w o r k m a n s h i p f o r a p e r i o d o f o n e y e a r ( o r o t h e r p e r i o d i f s p e c i f i e d ) f r o m d a t e o f s a l e b y o m r o n . o m r o n m a k e s n o w a r r a n t y o r r e p r e s e n t a t i o n , e x p r e s s o r i m p l i e d , r e g a r d i n g n o n - i n f r i n g e m e n t , m e r c h a n t a b i l i t y , o r f i t n e s s f o r p a r t i c u l a r p u r p o s e o f t h e p r o d u c t s . a n y b u y e r o r u s e r a c k n o w l e d g e s t h a t t h e b u y e r o r u s e r a l o n e h a s d e t e r m i n e d t h a t t h e p r o d u c t s w i l l s u i t a b l y m e e t t h e r e q u i r e m e n t s o f t h e i r i n t e n d e d u s e . o m r o n d i s c l a i m s a l l o t h e r w a r r a n t i e s , e x p r e s s o r i m p l i e d . l i m i t a t i o n s o f l i a b i l i t y o m r o n s h a l l n o t b e r e s p o n s i b l e f o r s p e c i a l , i n d i r e c t , o r c o n s e q u e n t i a l d a m a g e s , l o s s o f p r o f i t s o r c o m m e r c i a l l o s s i n a n y w a y c o n n e c t e d w i t h t h e p r o d u c t s , w h e t h e r s u c h c l a i m i s b a s e d o n c o n t r a c t , w a r r a n t y , n e g l i g e n c e , o r s t r i c t l i a b i l i t y . i n n o e v e n t s h a l l t h e r e s p o n s i b i l i t y o f o m r o n f o r a n y a c t e x c e e d t h e i n d i v i d u a l p r i c e o f t h e p r o d u c t o n w h i c h l i a b i l i t y i s a s s e r t e d . i n n o e v e n t s h a l l o m r o n b e r e s p o n s i b l e f o r w a r r a n t y , r e p a i r , o r o t h e r c l a i m s r e g a r d i n g t h e p r o d u c t s u n l e s s o m r o n ' s a n a l y s i s c o n f i r m s t h a t t h e p r o d u c t s w e r e p r o p e r l y h a n d l e d , s t o r e d , i n s t a l l e d , a n d m a i n t a i n e d a n d n o t s u b j e c t t o c o n t a m i n a t i o n , a b u s e , m i s u s e , o r i n a p p r o p r i a t e m o d i f i c a t i o n o r r e p a i r . a p p l i c a t i o n c o n s i d e r a t i o n s s u i t a b i l i t y f o r u s e o m r o n s h a l l n o t b e r e s p o n s i b l e f o r c o n f o r m i t y w i t h a n y s t a n d a r d s , c o d e s , o r r e g u l a t i o n s t h a t a p p l y t o t h e c o m b i n a t i o n o f p r o d u c t s i n t h e c u s t o m e r ' s a p p l i c a t i o n o r u s e o f t h e p r o d u c t s . a t t h e c u s t o m e r ' s r e q u e s t , o m r o n w i l l p r o v i d e a p p l i c a b l e t h i r d p a r t y c e r t i f i c a t i o n d o c u m e n t s i d e n t i f y i n g r a t i n g s a n d l i m i t a t i o n s o f u s e t h a t a p p l y t o t h e p r o d u c t s . t h i s i n f o r m a t i o n b y i t s e l f i s n o t s u f f i c i e n t f o r a c o m p l e t e d e t e r m i n a t i o n o f t h e s u i t a b i l i t y o f t h e p r o d u c t s i n c o m b i n a t i o n w i t h t h e e n d p r o d u c t , machin e , s y s t e m , o r o t h e r a p p l i c a t i o n o r u s e . t h e f o l l o w i n g a r e s o m e e x a m p l e s o f a p p l i c a t i o n s f o r w h i c h p a r t i c u l a r a t t e n t i o n m u s t b e g i v e n . t h i s i s n o t i n t e n d e d t o b e a n e x h a u s t i v e l i s t o f a l l p o s s i b l e u s e s o f t h e p r o d u c t s , n o r i s i t i n t e n d e d t o i m p l y t h a t t h e u s e s l i s t e d m a y b e s u i t a b l e f o r t h e p r o d u c t s : o u t d o o r u s e , u s e s i n v o l v i n g p o t e n t i a l c h e m i c a l c o n t a m i n a t i o n o r e l e c t r i c a l i n t e r f e r e n c e , o r c o n d i t i o n s o r u s e s n o t d e s c r i b e d i n t h i s c a t a l o g . n u c l e a r e n e r g y c o n t r o l s y s t e m s , c o m b u s t i o n s y s t e m s , r a i l r o a d s y s t e m s , a v i a t i o n s y s t e m s , m e d i c a l e q u i p m e n t , a m u s e m e n t m a c h i n e s , v e h i c l e s , s a f e t y e q u i p m e n t , a n d i n s t a l l a t i o n s s u b j e c t t o s e p a r a t e i n d u s t r y o r g o v e r n m e n t r e g u l a t i o n s . s y s t e m s , m a c h i n e s , a n d e q u i p m e n t t h a t c o u l d p r e s e n t a r i s k t o l i f e o r p r o p e r t y . p l e a s e k n o w a n d o b s e r v e a l l p r o h i b i t i o n s o f u s e a p p l i c a b l e t o t h e p r o d u c t s . n e v e r u s e t h e p r o d u c t s f o r a n a p p l i c a t i o n i n v o l v i n g s e r i o u s r i s k t o l i f e o r p r o p e r t y w i t h o u t e n s u r i n g t h a t t h e s y s t e m a s a w h o l e h a s b e e n d e s i g n e d t o a d d r e s s t h e r i s k s , a n d t h a t t h e o m r o n p r o d u c t s a r e p r o p e r l y r a t e d a n d i n s t a l l e d f o r t h e i n t e n d e d u s e w i t h i n t h e o v e r a l l e q u i p m e n t o r s y s t e m . p r o g r a m m a b l e p r o d u c t s o m r o n s h a l l n o t b e r e s p o n s i b l e f o r t h e u s e r ' s p r o g r a m m i n g o f a p r o g r a m m a b l e p r o d u c t , o r a n y c o n s e q u e n c e t h e r e o f . d i s c l a i m e r s c h a n g e i n s p e c i f i c a t i o n s p r o d u c t s p e c i f i c a t i o n s a n d a c c e s s o r i e s m a y b e c h a n g e d a t a n y t i m e b a s e d o n i m p r o v e m e n t s a n d o t h e r r e a s o n s . i t i s o u r p r a c t i c e t o c h a n g e m o d e l n u m b e r s w h e n p u b l i s h e d r a t i n g s o r f e a t u r e s a r e c h a n g e d , o r w h e n s i g n i f i c a n t c o n s t r u c t i o n c h a n g e s a r e m a d e . h o w e v e r , s o m e s p e c i f i c a t i o n s o f t h e p r o d u c t s m a y b e c h a n g e d w i t h o u t a n y n o t i c e . w h e n i n d o u b t , s p e c i a l m o d e l n u m b e r s m a y b e a s s i g n e d t o f i x o r e s t a b l i s h k e y s p e c i f i c a t i o n s f o r y o u r a p p l i c a t i o n o n y o u r r e q u e s t . p l e a s e c o n s u l t w i t h y o u r o m r o n r e p r e s e n t a t i v e a t a n y t i m e t o c o n f i r m a c t u a l s p e c i f i c a t i o n s o f p u r c h a s e d p r o d u c t s . d i m e n s i o n s a n d w e i g h t s d i m e n s i o n s a n d w e i g h t s a r e n o m i n a l a n d a r e n o t t o b e u s e d f o r m a n u f a c t u r i n g p u r p o s e s , e v e n w h e n t o l e r a n c e s a r e s h o w n . p e r f o r m a n c e d a t a perfor m a n c e d a t a g i v e n i n t h i s c a t a l o g i s p r o v i d e d a s a g u i d e f o r t h e u s e r i n d e t e r m i n i n g s u i t a b i l i t y a n d d o e s n o t c o n s t i t u t e a w a r r a n t y . i t m a y r e p r e s e n t t h e r e s u l t o f o m r o n ? s t e s t c o n d i t i o n s , a n d t h e u s e r s m u s t c o r r e l a t e i t t o a c t u a l a p p l i c a t i o n r e q u i r e m e n t s . a c t u a l p e r f o r m a n c e i s s u b j e c t t o t h e o m r o n w a r r a n t y a n d l i m i t a t i o n s o f l i a b i l i t y . e r r o r s a n d o m i s s i o n s t h e i n f o r m a t i o n i n t h i s d o c u m e n t h a s b e e n c a r e f u l l y c h e c k e d a n d i s b e l i e v e d t o b e a c c u r a t e ; h o w e v e r , n o r e s p o n s i b i l i t y i s a s s u m e d f o r c l e r i c a l , t y p o g r a p h i c a l , o r p r o o f r e a d i n g e r r o r s , o r o m i s s i o n s . 2009 . 10 i n t h e i n t e r e s t o f p r o d u c t i m p r o v e m e n t , s p e c i f i c a t i o n s a r e s u b j e c t t o c h a n g e w i t h o u t n o t i c e . o m r o n c o r p o r a t i o n i n d u s t r i a l a u t o m a t i o n c o m p a n y h t t p : / / w w w . i a . o m r o n . c o m / ( c ) c o p y r i g h t o m r o n c o r p o r a t i o n 2 0 0 9 a l l r i g h t r e s e r v e d .
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