Sensor Electronics SEC3120 Instruction And Operation Manual page 8

TB 3-SENSOR 2
TB 1-RELAY
TB 1 – RELAYS
(12) FAULT (N.E) N.C.
(11) FAULT (N.E.) COMMON
(10) FAULT (N.E) N.O.
(9) HIGH ALARM N.C.
(8) HIGH ALARM COMMON
(7) HIGH ALARM N.O.
(6) MID ALARM N.C.
(5) MID ALARM COMMON
(4) MID ALARM N.O.
(3) LOW ALARM N.C.
(2) LOW ALARM COMMON
(1) LOW ALARM N.O.
NC = NORMALLY CLOSED
NO = NORMALLY OPEN
SENSOR ELECTRONICS CORPORATION
12730 CREEK VIEW AVE
SAVAGE, MINNESOTA 55378
(T) 952.938.9486 (F) 952.938.9617
sales@sensorelectronics.com
Operator Manual
SEC3120 Digital Transmitter
TB 2 – SENSOR 1
(1) WHITE (DATA/CAL)
(2) BLUE OR GREEN
(4-20 mA)
(3) RED (+24 VDC)
(4) BLACK
(DC COMMON)
TB 3 – SENSOR 2
(1) WHITE (DATA/CAL)
(2) BLUE OR GREEN
(4-20 mA)
(3) RED (+24 VDC)
(4) BLACK
(DC COMMON)
Figure 1
BACK VIEW OF SEC3120
SEC3120 WIRING
Page 8 of 40
Sensor Electronics Corporation
TB 2-SENSOR 1
TB 4 – MAIN
TB 4 – MAIN
(1) +24 VDC
(2) 4-20 mA SENSOR 1
(3) DC COMMON
(4) RS485 DATA B
(5) RS485 DATA A
(6) ISOLATED COMMON
(7) 4-20 mA SENSOR 2
P/N 1580281
Rev 10, 20150707