A52x Series Electronic Refrigeration Controller with Adaptive Defrost Technical Bulletin
54
1.
Rated for 24 A at temperatures up to 45°C (113°F). From 45C° to 60C° (113F° to 140F°), the Ampere rating decreases from 24 A to 15 A
at a rate of 0.6 A per 1°C. The A52x Controller is not rated for use in ambient conditions above 60°C (140°F).
Table 13: SPST High Speed Fan (HI_SPD) Relay Electrical Ratings
Agency and File
UL 60730
EN 60730
Applied AC Voltage at 50/
60 Hz
24 VAC
120 VAC
240 VAC
240 VAC
Horsepower
--
1/2 HP
1/2 HP
1/2 HP
Full Load Amperes
--
9.8 A
4.9 A
4.9 A
Locked Rotor Amperes
--
58.8 A
29.4 A
29.4 A
Resistive Amperes
10 A
10 A
10 A
10 A
Pilot Duty VA
125 VA at 24 to 240 VAC
Table 14: SPST Defrost Relay Electrical Ratings
Agency and File
UL 60730
EN 60730
Applied AC Voltage at 50/
60 Hz
24 VAC
120 VAC
240 VAC
240 VAC
1
Resistive Amperes
10 A
24 A
1
24 A
1
24 A
1
Pilot Duty VA
125 VA at 24 to 240 VAC
Table 15: (Part 1 of 2)A52x Refrigeration Controller with Adaptive Defrost
Product
A524/A525
Power Consumption
1.8 VA maximum
Supply Power
84 VAC to 260 VAC, 50/60 HZ, 10 VA maximum
Ambient Conditions
Operating:
-30C°–60C° (-22F°–140F°), 0 to 95% RH non-condensing
Shipping and Storage:
-40C°–85C° (-40F°–185F°), 0 to 95% RH non-condensing
Temperature Sensing
Range
-40C°–50C°(-40F° –122F°)
Input Signal (Sn1 and Sn2)
1,035 ohms at 25
C (77
F) for A99B PTC temperature sensors
10,000 ohms at 25
C (77
F) for TS-6340 NTC temperature sensors
Input Signal (UI4 and UI5)
0–10 VDC input for leak detector status or dry contact binary input with a switch wired between
terminals UI4 and UI5 and C.
HVBIN Signal
120 VAC or 240 VAC
Sensor Offset Range
±3ºC or ±5ºF
RS485 MODBUS
Maximum distance is 100 ft; 9.6K baud is the default but 19.2K is also supported.
External USB
Use a standard USB flash drive to extract HACCP data or update firmware revision for future
upgrades.
Enclosure
IP65 watertight, corrosion-resistant, high-impact thermoplastic
Dimensions (H x W x D)
196.8 mm (7.75 in.) x 190.5 mm (7.5 in.) x 82.6 cm (3.25 in.)
Weight
1.1 kg (2.4 lb)