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

Call to order:

1-800-288-9383

Specs & Docs

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