Data Sheet
Electronic thermostat control
Type ETC 1H
For simple commercial refrigeration applications
The ETC 1H is introducing a flexible platform due to onboard micro-controller and software dedicated product configuration, perfect for light commercial refrigeration applications. Standard versions with similar functionality as the traditional electro-mechanical thermostats as well as several customized high performance software versions for various applications are available.
The ETC 1H is developed for applications such as:
• Refrigerators
• Bottle coolers
• Freezers
• No-frost freezers with heating element
• Medicine coolers
AI215986425643en-000501
Electronic thermostat control, type ETC 1H
Features
•ETC 1H can control the cabinet temperature directly
•ETC 1H has low energy consumption
•1 or 2 sensors (Air, evaporator) and optional remote display can be connected
•Using NTC temperature sensors
•Temperature control independent of barometric pressure
•High accuracy combined with close diƒerentials and narrow tolerances ensures improved control
•Built in timers enhances functionality
•Optional alarm for over or under temperature in both cold and warm
•Auxiliary relays: 5 Amp for heater, fan, light etc. Eventually with delayed start or/and stop
•Under voltage and over voltage compressor protection (brown-out protection)
•Pressure equalisation protection on starting the device or when voltage drops out (blackout protection)
•Diagnostics and self check of sensors and potentiometer
•Several defrosting methods can be handled:
◦Time controlled defrosting
◦Time controlled defrosting with evaporator sensor
◦Temperature controlled defrosting
•Dual band control of outdoor bottle coolers
•Quick Parameter Programming using PC software tool and Gateway
•Hydrocarbon refrigerant compatible relay outputs
Product specification
Technical data
Table 1: Technical data
Product speci€cation |
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120 V, 60 Hz |
230 V, 50/60 Hz |
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Power supply |
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115 V AC +/- 10% 60 Hz |
220 V AC – 240 V DC +/- 10% 50 Hz |
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Energy consumption |
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Max 0.5 Watt |
Max 0.5 Watt |
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Operating conditions |
Ambient temp. |
32 – 122 °F |
0 – 50 °C |
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Humidity |
Max 90% RH, Non-condensing |
Max 90% RH, Non-condensing |
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Measuring range |
NTC sensor |
-40 – +185 °F |
-40 – +85 °C |
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Relay output 1 |
Compressor |
UL 60730: LRA96, FLA16 |
IEC/EN 60730: 16(16) A |
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UL 60730: LRA 60/ FLA 10 |
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Relay output 2 |
Heater |
5 A |
5 A |
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Relay output 3 |
Fan |
UL 60730: LRA 6/ FLA1 |
IEC/EN 60730: 5 A |
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UL 60730: LRA 6/ FLA 1 |
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Accuracy |
NTC sensor |
+/- 1 K |
+/- 1 K |
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ETC 1H |
+/- 0.5 K |
+/- 0.5 K |
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Temperature sensors |
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NTC5K |
NTC5K |
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Relay 1 |
+350,000 cycles |
+350,000 cycles |
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Life time |
Relay 2 |
+30,000 cycles |
+30,000 cycles |
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Relay 3 |
+30,000 cycles |
+30,000 cycles |
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Power |
6.3 x 0.8 mm tabs, RAST 5 |
6.3 × 0.8 mm tabs, RAST 5 |
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Connections |
Signal/remote |
3-pole RAST 2,5 edge connector |
3-pole RAST 2,5 edge connector |
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2-Pole RAST 2,5 edge connector |
2-Pole RAST 2,5 edge connector |
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Temperature indication |
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Through optional remote display |
Through optional remote display |
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Approvals |
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UL-C, NSF |
Semko, CE, CQC, EAC |
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EMC Category |
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------ |
Category-1 |
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IP class |
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IP 00 |
IP 00 |
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Remote control |
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Optional remote display with Control. 1- |
Optional remote display with Control. 1- |
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wire protocol |
wire protocol |
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Number of sensors |
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2 (optional 3) |
2 (optional 3) |
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Start-up-time |
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< 2 seconds |
< 2 seconds |
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© Danfoss | Climate Solutions | 2021.03 |
AI215986425643en-000501 | 2 |
Electronic thermostat control, type ETC 1H
Functionality
Table 2: Functionality
Product speci€cation |
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Description |
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Temperature |
Settings |
Diƒerential: -1 – 10 K , Range: 0 – 30 K, Defrost: 0 – 10 °C |
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Adjustment |
Knob with stop 210° +/-5°. Stop 45°+/-5° o Knob angle without stop 255°+/-5° |
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Visual indication |
On-board LED (Red) |
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Diagnostics |
Function |
Self check of sensors and potentiometer |
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Sensor fault |
Air sensor |
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Compressor protection |
Brown-out |
Under-voltage and over-voltage protection |
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Black-out |
Based on temperature at cabinet sensor |
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Mode 1 |
Start by TimeStop by Cabinet Temperature (1 sensor) |
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Defrost |
Mode 2 |
Start by TimeStop by Defrost Sensor (2 sensors) |
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Mode 3 |
Start and Stop by Defrost Sensor (2 sensors) |
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Types |
Over or/and under temperature in cold or warm |
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Alarm |
Indication |
Flashing LED on the ETC 1H or by an external connected remote module or optionally to one of |
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the relays to control a buzzer |
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Function |
Monitor the condenser temperature and stop the compressor until the temperature goes below |
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Blocked condenser |
the condenser warning temperature |
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On customer request only |
Indication |
Flashing LED on the ETC 1H or by an external connected remote module or optionally to one of |
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the relays to control a buzzer |
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Parameters
It is possible to adjust the following parameters in the controller using Danfoss PC software tool ‘KoolProg’ and Gateway.
For more information please visit: KoolProg
Table 3: Parameters
Parameter |
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Min |
Max |
Default |
Unit |
Thermostat |
Cold cut-out |
-65 |
50 |
0 |
°C |
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Warm cut-out |
-65 |
50 |
10 |
°C |
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Default temp set also used as remote setpoint |
0 |
1023 |
512 |
0: cold |
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1023: warm |
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Cold diƒerential |
-1 |
20 |
1 |
K |
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Warm diƒerential |
-1 |
20 |
1 |
K |
Compressor |
Min runtime |
0 |
1800 |
300 |
Sec |
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Min stoptime |
0 |
1800 |
300 |
Sec |
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Max runtime |
0 |
10800 |
3600 |
Sec |
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Max stoptime |
0 |
10800 |
5400 |
Sec |
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Error runtime |
0 |
1800 |
600 |
Sec |
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Error Stoptime |
0 |
1800 |
900 |
Sec |
Alarm on relay |
Cold overtemp alarm |
-65 |
50 |
15 |
°C |
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Warm overtemp alarm |
-65 |
50 |
15 |
°C |
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Cold undertemp alarm |
-65 |
50 |
2 |
°C |
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Warm undertemp alarm |
-65 |
50 |
2 |
°C |
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Alarm delay |
0 |
120 |
60 |
Min |
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© Danfoss | Climate Solutions | 2021.03 |
AI215986425643en-000501 | 3 |
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