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Multi-Point Process Switch

EX-1711

Effective: September 2006

(Replaces October 2002)

EX-1711

Multi-Point

™

Process Switch

Single-Channel Analog

Start-Up/Operation
Instructions

KING-GAGE

®

4-20 mA Process Control

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Содержание Multi-Point

Страница 1: ...1 Multi Point Process Switch EX 1711 Effective September 2006 Replaces October 2002 EX 1711 Multi Point Process Switch Single Channel Analog Start Up Operation Instructions KING GAGE 4 20 mA Process Control ...

Страница 2: ...hether expressed implied or statutory including the warranties of fitness for a particular purpose or merchantability are given by this agreement The exclusive remedy for nonconformity of these goods shall be repair and or replacement of the nonconforming goods or parts Seller will not be liable for consequential damages resulting from breach of this agreement The term consequential damages shall ...

Страница 3: ...ower Terminal Connections 5 Internal Fuse Replacement 6 4 20 mA Process Loop Typical Process Loop Diagram 7 Input Current Limiting PTC Resistor 7 Set Points Output Relays Front Panel LED Status Indicators 8 3 0 Amp SPDT Relays 8 Set Point Adjustments 9 Deadband Adjustment 10 Troubleshooting Symptoms and Possible Causes 11 ...

Страница 4: ...Adjustment Set points can be adjusted to better than 0 05 FS 0 008 mAdc Repeatability Set point settings are repeatable to better than 0 05 FS Long Term Repeatability better than 0 1 FS Deadband Single deadband potentiometer controls all four set point settings Deadband adjustable from 1 0 12 5 FS Factory preset to 1 FS Output 4 independent SPDT form C relays maximum 3 0 A 115 Vac Rated for minimu...

Страница 5: ...ation that details the terminal connections located at the top of the housing Plug Type Connectors Terminal blocks plug into a mating socket on the Process Switch housing Three 3 individual terminal blocks are provided 1 3 terminal AC Power block 2 12 terminal Relay Contact block 3 2 terminal Signal Input block Hot Gnd Neu C N O N C C N O N C C N O N C C N O N C INPUT 4 20 mA AC 115 V S E T 1 S E ...

Страница 6: ... 250 Volt non time delay fuse To replace this fuse remove the side panel from the housing This is held in place by four 4 phillips head screws CAUTION Disconnect AC power prior to opening housing or replacing fuse assembly Replacement Fuse Order No 7469 21 0 1 2 Amp FAST BLO 5 pack Equivalent to BUSS AGC 1 2 Internal Fuse ...

Страница 7: ...ient PTC resistor circuit is incorporated into the Process Switch for protection against overcurrent situations This thermal resistor undergoes increased orders of magnitude in resistance when an input current 70 0 mAdc heats it above a certain point In the switched state a latched high resistance limits current to no more than a few milliamps The resistor circuit resets automatically permitting n...

Страница 8: ...perations provide fail safe limiting or alarm functions Front Panel LED Status Indicators are located on the front panel of the Process Switch Each of the four 4 LEDs correspond to SET1 SET2 SET3 SET4 adjustments and output relays When illuminated the LED indicates that the set point has been reached and corresponding relay energized SPDT Form C Output Relays Four 4 independentSPDT single pole dou...

Страница 9: ...actory presetwithanominal1 0 FSdeadband Deadband can be used to eliminate cycling due to fluctuations within the 4 20 mA input signal Resetting the deadband will also shift the set point accordingly Refer to diagrams below 10 00 mA 9 84 mA Set Point 1 FS Deadband Relay Remains Energized Relay off Relay is triggered m A m A 10 00 mA 10 04 mA 9 84 mA 9 80 mA Original Set Point Increased Deadband Rel...

Страница 10: ...eLEDstatusindicatorisilluminated turntheCoarse potentiometer counter clockwise CCW until it goes off Very slowly turn potentiometer clockwise but not so much as to trigger LED It may be necessary to repeat this procedure to achieve the coarse adjustment 2 Turn FINE potentiometer clockwise CW very slowly and stopping immediately as soon as LED is illuminated Warning If deadband is adjusted all exis...

Страница 11: ... than the set point value If a low level set point is required to actuate a pump or to close a valve re wire circuit at relay using the N C normally closed switch contact Unusually high load resistance RL at Process Switch Possible short circuit in signal loop If signal current exceeds 70 mAdc an overcurrent limiting PTC PTC positive temperature coefficient resistor restricts current levels throug...

Страница 12: ...O R A T I O N E N G I N E E R I N G KING 3201 South State St Ann Arbor Michigan 48108 1625 U S A PO Box 1228 Ann Arbor Michigan 48106 1228 U S A Phone 734 662 5691 FAX 734 662 6652 www king gage com Since 1937 ...

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