TCS SZ2141 Refrigeration Controller

Description

The SZ2141 is a microprocessor-based refrigeration controller and alarm interface is designed to control three coolers or freezers and monitor up to six additional.

Features:

• Stand-alone or network operation

• Independently programmable high and low limits for each input

• Independently programmable manual or automatic alarm reset

• Change of state factor with programmable hysteresis

• Status LEDs

• Relay output to activate additional auxiliary communication devices or external alarm circuit

• Six RTD temperature inputs

• Five analog inputs suitable for a broad variety of transducers

• Programmable defrost cycles with time or temp termination

• Temperature or pressure monitoring inputs

• Monitor compressor and door status

Specifications:

General Accuracy: +/- 0.5%
Programming: EIA RS485 interface
Communications: RS485, half duplex
Memory backup: Non-volatile EEPROM, no battery required
Environmental Operating temperature: 32 to 131°F (0 to 55°C)
Operating humidity: 0 to 100% RH, non-condensing
Storage temperature: 14 to 140°F (-10 to 60°C)
Electrical Supply voltage: 24 VAC +/- 20%
Inputs: Six platinum RTDs, range: -40 to 160°F five 4-20 mA analog and six digital (dry contact)
Outputs: Nine digital (SPST dry contact, 24 VAC @ 1 A) configurable
Analog input impedance: 250 Ω
Power Consumption: 15 VA max.
Specifications subject to change without notice