Omron CQM1 User Manual

246
Specifications Section 2-2
is ±3 °C ±1 digit max. The accuracy of B thermocouples at or below 400 °C
is not specified.
2. When returning a Unit for repairs, always include the terminal block (or the
cold junction compensator).
Heater Burnout Alarm (CQM1-TC@03/TC@04)
Note 1. Heater burnout detection will be disabled if the alarm is set to 0.0 A. The
heater burnout alarm output will turn ON if the alarm is set to 50.0 A.
2. If the control output is ON for less than 200 ms, heater burnout will not be
detected and the heater current will not be measured.
Current Detector (CT) Ratings
Dimensions:
CQM1-TC20@/TC30@
Item Specification
Maximum heater current 50 A, single-phase AC
Input current monitoring accuracy ±5 % FS ±1 digit
Heater burnout alarm setting 0.1 to 49.9 A (0.1 A unit) (See note 1.)
Minimum ON time for detection 200 ms (See note 2.)
Item E54-CT1 E54-CT3
Continuous maximum
heater current
50 A
Range for accurate
measurement
0 to 30 A 0 to 50 A
Withstand voltage 1,000 VAC
Shock resistance 50 Hz (Approx. 10 G)
Hole diameter 5.8 mm 12.0 mm
Weight Approx. 11.5 g Approx. 50 g
Accessories None Contactors: 2
Plugs: 2
Unit: mm

Omron CQM1 Specifications

General

Model	CQM1
I/O Capacity	Up to 256 I/O points
Programming Language	Ladder Logic
Timer/Counter	128 timers/counters
Operating Temperature	0 to 55°C
Humidity	10 to 90% RH (non-condensing)
Power Supply	24 VDC or 100-240 VAC
Communication Ports	RS-232C
Memory Capacity	3.2K words
Instruction Set	Basic and advanced instructions
Memory	RAM (battery-backed)
Program Memory	3.2K words
Storage Temperature	-20 to 75°C