Danfoss EKF 1A, EKF 2A Data sheet

Data Sheet

Stepper Valve driver Type EKF 1A, EKF 2A

Driver for stepper motor valves

Stepper Valve Driver EKF series is for use where stepper valves must be accurately controlled typically in commercial air conditioning, heat pumps, commercial refrigeration and food retail applications

Features:

• Support both Bipolar and Unipolar stepper motor valves

• Driven by analog input signal

• Fast installation and setup

• Lost step prevention

• Open circuit detection

• LED indication for valve movement and alarm/warnings

• On board DIP switch for quick selection

• Plug and play

• 4 pole terminal block and JST-XHP 5 pin connections

• Phoenix connector terminals

• Digital output for alarm signal

• 1 and 2 valve driver version available

AI383967949152en-000102

Features

EKF 1A

EKF 2A

Code number

080G5030

080G5035

Power supply

24 V AC/DC

Number of valves

1 stepper motor valve

2 stepper motor valves

Valve type

Unipolar/Bipolar

Analog inputs

1

2

Digital outputs

1

Dip switch

1

2

Battery backup support

Yes

Mounting

35 mm, 4 DIN

Dimension (H x W)(mm)

110 x 70

EKE 2U Backup power module

Power supply

EKE 2U Backup power module ensures sucient power in case of power failures to the controller / driver to ensure closure of the electronic valves.

AK-PS

Input: 100 - 240 V AC/45 - 65 Hz Output: 24 V DC: available with 18 VA, 36 VA and 60 VA

ACCTRD

Input: 230 V AC, 50 - 60 Hz Output: 24 V AC, available with 12 VA, 22 VA and 35 VA

Stepper Valve driver, type EKF 1A, EKF 2A

Portfolio overview

Table 1: Portfolio overview

Table 2: Related Products

AI1

AI2

Unit programmable controller

ETS Colibri

AI1

Digital out

ETS Colibri

AI1

AI2

ETS Colibri

Digital out

Unit programmable controller

Analog input signal 1

Analog input signal 2

Stepper Valve driver, type EKF 1A, EKF 2A

Applications

EKF series stepper valve drivers can be used in application where accurate control of stepper motor valves are needed using analog input signals (0-10V, 0-5V, 4-20 mA, 0-20 mA) from unit programmable controllers. The product can be used for both Bipolar and Unipolar type valves. General applications include use in commercial air conditioning, heat pumps, commercial refrigeration and food retail application

Figure 1: EKF 1A

Figure 2: EKF 2A

Supply voltage

EKF 1A: 24 V AC / DC 50 / 60 Hz EKF 2A: 24 V AC / DC, 50 / 60 Hz

Power consumption

Idle operating: < 1 W (without valve) Data below shows power consumption for using 1 valve. When using two valves sum the power consumption of each valve.

CCMT 16 – CCMT 42 ETS 5M, ETS 6 ETS 12C – ETS 100C, KVS C ETS 12.5 – 400 ETS 500P, 800P CCMT 2- CCMT 8 CTR 20 CCMT L

25 VA / 15 W 20 VA / 10 W 30 VA /15 W 10 VA / 5 W 28 VA / 20 W 10 VA / 5 W 14 VA / 10 W 20 VA / 10 W

Analog inputs

EKF 1A: 1 input AI1

0-5 V, 0-10 V, 4-20 mA, 0-20 mA

EKF 2A: 2 inputs AI1 and AI2

0-5 V, 0-10 V, 4-20 mA, 0-20 mA

Max. 15 V Analog input voltage. Do not connect voltage sources to unpowered units without limiting the current to analog inputs (overall 40 mA per input). Input Impedance: >50 kΩ (Voltage Input) 120 Ω ± 2% (Current Input)

Digital outputs

1 output for EKF1A / EKF 2A: D01 (open collector), sink current max 10 mA

Valve support

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 / KVS / ETS C / KVS C / CCMT 2 – CCMT 42 / CTR / CCMT L Valves

- ETS 6 / ETS 5M Valves Open circuit HW diagnostics is present.

Battery backup

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.

Enviroment

Storage

-30 – 80 °C / -22 – 176 °F

Operating

-20 – 60 °C / -4 – 140 °F

Humidity

< 90% RH, non-condensing

DIN Mounting

4 DIN, 35mm

Stepper valve driver

Product description

EKF 2A

Product type designation

080G5035

Product code number

24V AC/DC 50/60 Hz

Input power rating

PV01

Product version

SW1v00

Software version

QR code

Danfoss product information website

Made in Denmark

Country of origin

Danfoss A/S, 6430 Nordborg, Denmark

Company address

Stepper Valve driver, type EKF 1A, EKF 2A

Product specication

Table 3: Technical data

Identication

Product label is positioned behind the product.

Figure 3: Product label

Above product label is an example.

Table 4: Description

Koolprog PC Tool

Koolkey

DIP Switch1

Koolkey

Koolprog PC Tool

Stepper Valve driver, type EKF 1A, EKF 2A

Connection diagrams

Figure 4: EKF 1A

Figure 5: EKF 2A

 NOTE:

There is both 4 pin terminal and JST 5 pin terminal available on the board per stepper drive output.

Only one of the terminals should be used per valve.

Do not connect valves to both 4 pin terminal and JST terminal of the same stepper driver output.

Description

Code No.

Stepper Valve Driver EKF 1A

080G5030

Stepper Valve Driver EKF 2A

080G5035

Stepper Valve driver, type EKF 1A, EKF 2A

Ordering

Table 5: Product part numbers

Stepper Valve driver, type EKF 1A, EKF 2A

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Table 6: Approvals

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Danfoss EKF 1A, EKF 2A Data sheet

Specifications and Main Features

Frequently Asked Questions

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