ATR121

3 Digit Temperature Controller, ATR121

• Features
• UL, CE.
• 3 Digit Temperature Controller
• PC Programmable
• Memory Card Programmable
• 1 1/4 x 2 7/8 " cut out
• 32 x 74 mm cut out
• Isolated
• Output up to 2 Relays
• SSR
• Option Modbus

• Buy Online  

• Datasheet

• Manual

• PID and Temperature Controllers

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3 Digit Temperature Controller, ATR121

This controller has been replaced by the ATR144. A newer better and lower cost contoller.

The ATR121 Temperature Controller is a 3 digit display PID controller with up to 2 relay outputs, solid state output and an option to be a Modbus RS485 Slave device. The ATR121 is only 1 1/4 x 2 7/8" cut out and is able to withstand environmental conditions up to IP65 with the optional gasket.
The ATR121 can be programmed with the front panel keypad or PC based software and multiple units can be cloned with the use of a memory card enabling high speed configuration. The PC based software can also be used to monitor several Temperature Controllers.
The ATR121 has various sensor inputs including thermocouples, RTD's, mA, voltage, thermistors and potentiometers. Desired control is maintained with PID and auto tuning.

ATR121 Wiring Connections

Power Supply	ATR121-A and B	ATR121-ADT
Positive	Terminal 2	Terminal 2
Negative	Terminal 1	Terminal 1
Output
Relay 1
Normally Closed	Terminal 3	Terminal 3
Common	Terminal 4	Terminal 4
Normally Open	Terminal 5	Terminal 5
Relay 2
Common	Terminal 6
Normally Open	Terminal 7
RS485 Option		Terminal 6
		Terminal 7
SSR Output	Negative 8	Negative 8
	Positive 9	Positive 9
T/C's, Voltage, mA	Positive 12	Positive 12
	Negative 11	Negative 11
2 Wire Current	Negative 9	Negative 9
	Positive 12	Positive 12
Thermistor	Terminal 10	Terminal 10
	Terminal 11	Terminal 11
Potentiometer	Terminal 10	Terminal 10
	Terminal 11	Terminal 11

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