Signal Conditioners, Temperature Transmitters and Controllers
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  • Phase Angle Temperature Controller DRR227.

    • Set point Display
    • PC Programmable
    • Memory Card Programmable
    • 1/4 Din Standard cut out
    • 48 X 48 mm
    • Phase Angle Temperature Control
    • Burst Firing
    • Output 2 Relays
    • SSR

Phase Angle Temperature Controller, DRR227

General Description

The DRR227 Phase Angle Temperature Controller is DIN Rail Mounted and has 3 SSR outputs. It has options for Phase Angle or Burst Firing control. The DRR227 accepts inputs from K, J, S or R type thermocouples, Pt100, Pt500, Pt1000 and Ni100 RTD'S and PTC1K and NTC10K Thermistor inputs. The DRR227 also accepts inputs from sensor with 4-20mA, 0-20mA, 0-40mV or 0-10V outputs. The DRR227 can also accept an input from Potentiometer with the nominal range of 6 K ohms or 150 K ohms. An input is available for a Current Transformer. The DRR227 has two 4 digit displays one for the Process variable and the other for the Set point.
The DRR227 has 2 relay and a Solid State Output. The DRR227 is 1/4 Din standard 48 x 48 mm and is able to withstand environmental conditions up to IP65 with the optional gasket.
The DRR227 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.
Desired control is maintained with PID and auto tuning.

0-20 mA, 4-20mA
2 Relays

Power Supply Voltage
24 to 230 Vac Vdc
Front panel Keyboard
PC Configurable.
USB Micro Memory Card.
For Industrial environments
Immunity EN 61000-6-2
Emission EN 6100-6-4
Material self-extinguishing
Dimensions W x H x T
Weight 6 oz 195 g
Operating Temperature 32°F +113°F 0°C +45°C
Humidity (non condensing) 35-95%



Input °F °C
K Type Thermocouple -436 to 2480°F -260 to 1360°C
S Type Thermocouple -40 to 3200°F -20 to 1760°C
R Type Thermocouple -40 to 3200°F -20 to 1760°C
J Type Thermocouple -328 to 2192°F -200 to 1200°C
RTD PT100 -328 to 1112°F -200 to 600°C
RTD PT500 -328 to 284°F -200 to 140°C
NI 100 -76 to 356°F -60 to 180°C
NTC 10K Ohm Thermistor -40 to 257°F -40 to 125°C
PTC 1K Ohm Thermistor -40 to 302°F -40 to 150°C
PT500 -148 to 1112°F -100 to 600°C
PT1000 -148 to 1112°F -100 to 600°C
Digital Input 1 PNP.
Relays Up to 3. 2 A 250V AC
SSR Phase Angle, Burst Firing.
Power Supply: 24 to 240Vac/Vdc.
Power Consumption: 5VA max.
Temperature rating: Operative- 32°F +113°F -0°C +45°C
Humidity: (non condensing) 35-95%.
Housing: Polycarbonate UL94V2 self-extinguishing
Dimensions: 1 7/8 " x 1 7/8 " x 4", 48 x 48 x 90 mm.
Weight: 3 oz 100 g.
EMC. For industrial environments.
  Immunity: EN 61000-6-2.
  Emission: EN 61000-6-4.
Configuration: PC Configurable, Memory Card


Phase Angle Temperature Controller wiring diagram
Power supply DRR227-12ABC  DRR227-14ABC 
Positive Terminal 12 Terminal 12
Negative Terminal 1 Terminal 1
Relay 1
Common Terminal 9  Terminal 9 
Normally Open Terminal 10 Terminal 10
Relay 2
Common Terminal 7   
Normally Open Terminal 8  
SSR Output 1 Negative 5 Negative 5
Positive 6 Positive 6
SSR Output 2 Negative 7
Positive 8 
SSR Output 3 Negative 9
Positive 10 
Sensor Input
Thermocouples Positive 1 Positive 1
Negative 2 Negative 2
Thermistor Terminal 3 Terminal 3
Terminal 2 Terminal 2
Potentiometer Terminal 2 Terminal 2
Terminal 3 Terminal 3


  • Burst Firing Phase Angle Temperature Control.
Back to General Description DRR227 Phase Angle Temperature Controller.