Full Gauge

TC-941Ri Plus

TC-940 Series • Refrigeration Controller

Type Refrigeration

Application Cold Room

Probe Inputs 3

Relay Outputs 4

Communication RS485

Panel Size 32x74 mm

R1 Compressor

R2 Defrost

R3 Fan

R4 Auxiliary/Alarm

Advanced cold room controller with 4 relay outputs and buzzer

Technical Specifications

Display Type	LED
Display Digits	3
Buttons	4
LED Indicators	Compressor, Defrost, Fan, Aux, Alarm

Relay Outputs	4
Relay Rating	10A/250VAC

Operating Temp	-10 to 50°C
Storage Temp	-20 to 60°C

Terminal	Function	Type	Wire Color
L	Power L	Input	brown
N	Power N	Input	blue
S1	Probe 1 (Room)	Input	red/white
S2	Probe 2 (Evap)	Input	red/white
S3	Probe 3 (Aux)	Input	red/white
R1	Relay 1 (Comp)	Output	black
R2	Relay 2 (Def)	Output	orange
R3	Relay 3 (Fan)	Output	green
R4	Relay 4 (Aux)	Output	yellow
A+	RS485 A+	Comm	yellow
B-	RS485 B-	Comm	green

Important: Always disconnect power before wiring. Verify terminal numbers with the actual controller label before connecting.

Code	Parameter	Range	Default	Description
Set	Setpoint	-50 to 105	0 °C	Temperature setpoint
Hys	Hysteresis	0.1 to 30	2 °C	Differential
Of1	Probe 1 Offset	-10 to 10	0 °C	Room probe cal
Of2	Probe 2 Offset	-10 to 10	0 °C	Evap probe cal
Of3	Probe 3 Offset	-10 to 10	0 °C	Aux probe cal
dF	Defrost Type	0=Off, 1=Elec, 2=Gas	1	Defrost method
dt	Defrost Duration	0 to 255	30 min	Max duration
dI	Defrost Interval	0 to 24	8 hr	Time between
St	Defrost End Temp	0 to 50	8 °C	Termination temp
O4F	Output 4 Function	0=Aux, 1=Alarm, 2=Light	1	Relay 4 mode
Add	Modbus Address	1 to 247	1	Network address