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Installation guide
Stepper Valve Driver
Type EKF 1A, EKF 2A
Introduction
Stepper Valve Driver EKF series is for use where stepper motor valves must be accurately controlled,
typically in commercial air conditioning, Commercial and Industrial heat pump, Commercial refrig-
eration and food retailing applications.
Technical Speci catons
Supply voltage
Power consumption
Analog inputs
Digital outputs
Valve support
Battery backup
Enviroment
DIN Mounting
© Danfoss | Climate Solutions | 2024.03
(080G5030,080G5035:PV03, 080G5036:PV01)
EKF 1A: 24 V AC / DC 50 / 60 Hz
EKF 2A: 24 V AC / DC, 50 / 60 Hz
Idle operating:
Power consumption for using 1 valve.
CCMT 16 – CCMT 42:
ETS 5M, ETS 6:
ETS 12C – ETS 100C, KVS C: 30 VA /15 W
ETS 12.5 – 400:
ETS 500P, 800P:
CCMT 2- CCMT 8:
CTR 20:
CCMT L:
When using two valves sum the power consumption of each valve.
EKF 1A: 1 input AI1
EKF 2A: 2 inputs AI1 and AI2
Max. 15 V Analog input voltage. Do not connect voltage sources to unpowered units with-
out limiting the current to analog inputs (overall 40 mA per input).
Input Impedance: >50 k
1 output for EKF1A / EKF 2A: D01 (open collector), sink current max 10 mA
EKF 1A: 1 stepper motor valve output, EKF 2A: 2 stepper motor valve output
STEPPER 1: A1, A2, B1, B2
STEPPER 2: A1, A2, B1, B2
Bipolar and unipolar stepper motor output:
- Danfoss ETS/ ETS L/ KVS/ ETS C/ KVS C/ CCMT 2 – CCMT 42/ CTR/ CCM/ CCMT L Valves
- ETS 6/ ETS 5M (unipolar)/ ETS 8M (Bipolar)/ ETS 8M (Unipolar) Valves
Open circuit HW diagnostics is present. This function is not available when
using Unipolar valves.
1 input for EKF 1A / EKF2A: Vbat
BAT, GND: Nominal 18 – 24 V DC, Min 16 V DC - Max 28 V DC (EKE 2U
recommended)
Max. battery current: 2 A at 18 V (valve depended)
Battery alarm/warning will be activated below 16 V DC.
Storage
Operating
Humidity
4 DIN
< 1 W (without valve)
25 VA / 15 W
20 VA / 10 W
10 VA / 5 W
28 VA / 20 W
10 VA / 5 W
14 VA / 10 W
20 VA / 10 W
0-5 V, 0-10 V, 4-20 mA, 0-20 mA
0-5 V, 0-10 V, 4-20 mA, 0-20 mA
(Voltage Input) 120
± 2% (Current Input)
-30 – 80 °C / -22 – 176 °F
-20 – 60 °C / -4 – 140 °F
< 90% RH, non-condensing
AN375548103097en-000206 | 1
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Summary of Contents for Danfoss 080G5030
- Page 1 STEPPER 2: A1, A2, B1, B2 Bipolar and unipolar stepper motor output: - Danfoss ETS/ ETS L/ KVS/ ETS C/ KVS C/ CCMT 2 – CCMT 42/ CTR/ CCM/ CCMT L Valves - ETS 6/ ETS 5M (unipolar)/ ETS 8M (Bipolar)/ ETS 8M (Unipolar) Valves Open circuit HW diagnostics is present.
- Page 2 The same should be observed while sharing power supply with EKF and master controller (AI signal)• • Connect PE either to the of power connector. If grounding is done in the transformer do not use EKF grounding connector. 2 | AN375548103097en-000206 © Danfoss | Climate Solutions | 2024.03...
- Page 3 LED indication table can help determine the Valve idle on target valve movement. Valve idle on target GREEN Valve opening GREEN Valve open Valve open circuit GREEN Power by Koolkey, no valve operation GREEN 3 | AN375548103097en-000206 © Danfoss | Climate Solutions | 2024.03...
- Page 4 Warning valve 1 GREEN Warning valve 2 GREEN Warning valve 1 GREEN + valve 2 Alarm/Warning LED The image shows the position of the alarm/Warning LED. Alarms has higher priority than warning 4 | AN375548103097en-000206 © Danfoss | Climate Solutions | 2024.03...
- Page 5 ETS 12C with 0-5 V AI input ETS 12C with 0-10 V AI input See example image of Dip Switch setting ETS 12C selected 0-5 V AI input 0-10 V AI input 5 | AN375548103097en-000206 © Danfoss | Climate Solutions | 2024.03...
- Page 6 • The correct valve must be de ned as per section DIP Switch – Valve Valve Cable Connection Danfoss recommends to use unipolar valves to be connected to JST XHP-5 pin connectors instead of 4 pole terminal block. Stepper valve...
- Page 7 Any misuse or improper handling may result in unintended consequences. By purchasing or using this product, you acknowledge and accept the professional-use-only nature of its application. Danfoss does not assume any liability for damages, injuries, or adverse consequences (“damage”) resulting from the incorrect or improper use of the product and you agree to indemnify Danfoss for any such damage resulting from your incorrect or improper use of the product.