Products / Refrigeration Controllers

A-Series Electronic Controller

Excellent entry-level solution for HT and HT/LT refrigeration

RELIABLE, ENTRY-LEVEL ELECTRONIC CONTROLLERS FOR HT AND HT/LT REFRIGERATION.

Compact panel-mount controllers offering direct compressor control via a high-power relay, selectable NTC10K/PTC probe input and configurable auxiliary outputs. AT1-5 is an excellent entry-level solution for HT refrigeration, while AT2-5 extends coverage to HT/LT applications with selectable electric, hot-gas or off-cycle defrost. Both are suitable for flammable A2L/A3 refrigerants thanks to sealed relays.

Key Features

Selectable Refrigerating or Heating control
Direct compressor control via high-power relay — no external contactor needed
Integrated defrost and door-open alarm management
Selectable NTC10K or PTC probe input
Configurable auxiliary output (4 to 6 operating modes depending on model)
Temperature and door-open alarm management
Optional light control button
TTL or RS485 serial port with selectable ASCII/RTU protocol
Reliable mechanical keypad
Suitable for flammable refrigerants (A2L/A3) thanks to sealed relays

Product range

Technical Data
Inputs	Sensor type	NTC10K or PTC1000, selectable
	Range	-50÷120°C
	Resolution	0.1° / 1° (°C; °F)
	Accuracy	NTC10K: ≤±0.3°C (-40.0÷70.0°C); PTC1000: ≤±0.5°C (-50÷120°C)
Outputs			AT1-5.Q…	AT1-5.S…	AT2-5.Q…	AT2-5.S…
	OUT1	Compressor	12(8)A @240Vac	16(8)A @240Vac	12(5)A @240vac	16(5)A @240vac
	AUX1	Evaporator fans	7(2)A @240Vac	7(2)A @240Vac	7(2)A @240vac	7(2)A @240vac
	AUX2	Auxiliary loads	7(2)A @240Vac	7(2)A @240Vac	7(2)A @240vac	7(2)A @240vac
	Maximum total current		12A	16A	12A	16A
Technical specifications	Power supply	230V~ ±10% 50÷60Hz 3W
	Front protection	IP54 (with gasket)
	Buzzer	Yes
	Real Time Clock battery	No
	Dimensions	77 x 35 x 77 mm
	Panel-cutout	71 x 29 mm (WxH)
Environment conditions	Operating temperature & humidity	-10… +50°C; 15%… 80% rH
Conformity	Marks	CE, UL
Conformity	Use with flammable refrigerants	A2L/A3 gases thanks to sealed relays (model depending)

Documentation

Access datasheets, manuals, software and technical resources of CD5.

358 KB

Technical Data AT1-5

Updated 17/05/2024

.PDF

219 KB

Instructions for use AT1-5

Updated 12/12/2007

358 KB

Technical Data AT2-5

Updated 17/05/2024

.PDF

215 KB

Instructions for use AT2-5

Updated 11/12/2007

LAE Electronic S.p.A.

Via Padova, 25

31046 Oderzo (TV), Italy

VAT 02205880269

Tel: +39 0422 815320

Mail: info@lae-electronic.com