Omron CQM1H series - Page 264

244
Units for Platinum Resistance Thermometers
Loop 2
Loop 4
Output 2
Output 4
+24 VDC
(from external
power supply)
Output 1
Output 3
Loop 3
Loop 1
CQM1-TC301
(4 loops, NPN
outputs)
CQM1-TC302
(4 loops, PNP
outputs)
CQM1-TC303
(2 loops, heater burnout
alarm NPN outputs)
CQM1-TC304
(2 loops, heater burnout
alarm PNP outputs)
Output 2
Output 4
+24 VDC
(from external
power supply)
Output 1
Output 3
Loop 3
Loop 1
Loop 2
Loop 4
Output 2
+24 VDC
(from external
power supply)
Output 1
Loop 1
Loop 2
Output 2
+24 VDC
(from external
power supply)
Output 1
Loop 1
Loop 2
• The +DC terminals for NPN outputs are internally connected.
• The 0V terminals for NPN outputs are internally connected.
Use M3 crimp connectors and tighten terminal screws to a torque of 0.3 to
0.5 Nm
6.2 mm max. 6.2 mm max.
Control output
Heater
AC power
Connect to CT input
terminals on the
Temperature Control
Unit (no polarity).
Heater wire
Current Detector
(E54-CT1/CT3)
CT
Output Interface
Maximum switching capability 100 mA, 24 VDC
+10%
/
–15%
Leakage current 0.1 mA max.
Residual voltage 0.8 V max.
External supply voltage 30 mA min., 24 VDC
+10%
/
–15%
(excluding load current)
When the short-circuit protection circuit operates, turn OFF the output or the out-
put power supply, or release the short circuit.
Crimp Terminals
Current Detectors
(E54-CT1/CT3)
Output Characteristics
Built-in Short-circuit
Protection Circuit
Wiring
Section 2-5