Danfoss ETC 1H Data sheet

Data Sheet

Electronic thermostat control
Type ETC 1H

For simple commercial refrigeration applications

The ETC 1H is introducing a exible platform
due to onboard micro-controller and software
dedicated product conguration, 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

Product

specication

120 V, 60 Hz

230 V, 50/60 Hz

Power supply

115 V AC +/- 10% 60 Hz

220 V AC – 240 V DC +/- 10% 50 Hz

Energy consumption

Max 0.5 Watt

Max 0.5 Watt

Operating conditions
Ambient temp.

32 – 122 °F

0 – 50 °C

Humidity

Max 90% RH, Non-condensing

Max 90% RH, Non-condensing

Measuring range

NTC sensor

-40 – +185 °F

-40 – +85 °C

Relay output 1

Compressor

UL 60730: LRA96, FLA16

IEC/EN 60730: 16(16) A
UL 60730: LRA 60/ FLA 10

Relay output 2

Heater

5 A

5 A

Relay output 3

Fan

UL 60730: LRA 6/ FLA1

IEC/EN 60730: 5 A
UL 60730: LRA 6/ FLA 1

Accuracy
NTC sensor

+/- 1 K

+/- 1 K

ETC 1H

+/- 0.5 K

+/- 0.5 K

Temperature sensors

NTC- 5K

NTC- 5K

Life time

Relay 1

+350,000 cycles

+350,000 cycles

Relay 2

+30,000 cycles

+30,000 cycles

Relay 3

+30,000 cycles

+30,000 cycles

Connections
Power

6.3 x 0.8 mm tabs, RAST 5

6.3 × 0.8 mm tabs, RAST 5

Signal/remote

3-pole RAST 2,5 edge connector
2-Pole RAST 2,5 edge connector

3-pole RAST 2,5 edge connector
2-Pole RAST 2,5 edge connector

Temperature indication

Through optional remote display

Through optional remote display

Approvals

UL-C, NSF

Semko, CE, CQC, EAC

EMC Category

------

Category-1

IP class

IP 00

IP 00

Remote control

Optional remote display with Control. 1­wire protocol

Optional remote display with Control. 1­wire protocol

Number of sensors

2 (optional 3)

2 (optional 3)

Start-up-time

< 2 seconds

< 2 seconds

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 dierentials 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 specication

Technical data

Table 1: Technical data

© Danfoss | Climate Solutions | 2021.03 AI215986425643en-000501 | 2

Product specication

Description

Temperature
Settings

Dierential: -1 – 10 K , Range: 0 – 30 K, Defrost: 0 – 10 °C

Adjustment

Knob with stop 210° +/-5°. Stop 45°+/-5° o Knob angle without stop 255°+/-5°

Diagnostics

Visual indication

On-board LED (Red)

Function

Self check of sensors and potentiometer

Sensor fault

Air sensor

Compressor protection
Brown-out

Under-voltage and over-voltage protection

Black-out

Based on temperature at cabinet sensor

Defrost

Mode 1

Start by Time- Stop by Cabinet Temperature (1 sensor)

Mode 2

Start by Time- Stop by Defrost Sensor (2 sensors)

Mode 3

Start and Stop by Defrost Sensor (2 sensors)

Alarm
Types

Over or/and under temperature in cold or warm

Indication

Flashing LED on the ETC 1H or by an external connected remote module or optionally to one of
the relays to control a buzzer

Blocked condenser

On customer request only

Function

Monitor the condenser temperature and stop the compressor until the temperature goes below
the condenser warning temperature

Indication

Flashing LED on the ETC 1H or by an external connected remote module or optionally to one of
the relays to control a buzzer

Parameter

Min

Max

Default

Unit

Thermostat

Cold cut-out

-65500

°C

Warm cut-out

-655010

°C

Default temp set also used as remote setpoint

0

1023

512

0: cold

1023: warm

Cold

dierential

-1201

K

Warm

dierential

-1201

K

Compressor

Min runtime01800

300

Sec

Min stoptime

0

1800

300

Sec

Max runtime

0

10800

3600

Sec

Max stoptime

0

10800

5400

Sec

Error runtime

0

1800

600

Sec

Error Stoptime

0

1800

900

Sec

Alarm on relay

Cold overtemp alarm

-655015

°C

Warm overtemp alarm

-655015

°C

Cold undertemp alarm

-65502

°C

Warm undertemp alarm

-65502

°C

Alarm delay012060Min

Electronic thermostat control, type ETC 1H

Functionality

Table 2: Functionality

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

© Danfoss | Climate Solutions | 2021.03 AI215986425643en-000501 | 3