Full Gauge

TC-900Ri clock

TC Series • Refrigeration Controller

Type Refrigeration

Application Display Case

Probe Inputs 1

Relay Outputs 1

Communication RS485 Modbus RTU

Panel Size 34x76 mm

R1 Compressor

Single relay with RS485 and real-time clock for scheduled defrost

Technical Specifications

Relay Outputs	1
Relay Rating	16A/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
S	NTC Probe	Input	red/white
NO	Relay NO	Output	black
C	Relay COM	Output	black
NC	Relay NC	Output	black
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	5 °C	Temperature setpoint
Hys	Hysteresis	0.1 to 30	2 °C	Differential
Ofs	Probe Offset	-10 to 10	0 °C	Calibration
Out	Output Mode	0=Cool, 1=Heat	0	Control action
Odr	Comp Delay	0 to 10	3 min	Restart delay
dt1	Defrost Time 1	00:00 to 23:59	06:00	First defrost
dt2	Defrost Time 2	00:00 to 23:59	14:00	Second defrost
dt3	Defrost Time 3	00:00 to 23:59	22:00	Third defrost
Add	RS485 Address	1 to 247	1	Modbus address