Danfoss EKE 1P Stepper Valve Extension Module Installation Guide

Danfoss EKE 1P Stepper Valve Extension Module

Identification

Dimensions [mm]

Application 1

Application 2

Battery back-up

Connection overview: EKE 1P

Valve connection

Application 1 driver configuration
AI4 open circuit or connected to 0V (COM): high-pressure valve driver
AI4 connected to 5V+: receiver valve driver

Recommended wire size and cable distance between EKE controller and stepper motor valve

Technical specifications

Power supply:
EKE has galvanic isolation by switch-mode power supply. 24 V AC ± 20 %, 50/60 Hz. Maximum power consumption: 18 VA. Input voltage rating (DC): 24 V DC ± 20%, 15 W.

Do not connect voltage sources to unpowered units without limiting the current to analogue inputs (overall 80 mA). Open circuit HW diagnostics available for voltage input on: AI4

Voltage

|

2

| AI3 *

0 – 5 V ratiometric

AI4

0 – 5 V, 0 – 10 V

PT1000| 2| AI1 , AI2
Auxiliary Supplies|

1

| 5 V +

Sensor supply: 5 V DC / 15 mA, overload protection approximately 150 mA

Digital inputs|

Voltage free contacts

|

2

| *DI1, DI2**

Steady current minimum 1 mA Cleaning current 100 mA at 15 V DC On: RIL < = 300 Ω

Off: RIH > = 3.5 k Ω

Digital output

|

Relay

|

1

| **C1-NO1***

Normally Open: 3 A General purpose, 250 V AC, 100 k cycle Normally Open: 3 A Inductive (AC-15), 250 V AC, 100 k cycle Normally Closed: 2 A General purpose, 250 V AC, 100 k cycle

Stepper motor

|

Bipolar / unipolar

|

1

| Stepper valves: A1, A2, B1, B2

Bipolar and unipolar stepper motor output:

• Danfoss CCMT 3L – CCMT 8L / CCMT 0 – CCMT 42 / CCM 10 – CCM 40 / ETS 6 – ETS 400 / CTR 20
  Other valves:

• speed 10 – 400 pps

•  drive mode 1/8 microstep

• max. peak phase current: 1.2 A (848 mA RMS)

• max. drive voltage 40 V

• max. output power 12 W

Battery backup| |

1

| VBATT: 18 – 24 V DC (24 V DC recommended):

• max. battery current: 850 mA at 18 V
• battery alarm will be activated below 16 V DC and above 27 V DC

Communication|

RS-485 RTU

|

1

| **RS-485***

Galvanic isolation

No built-in termination

CAN

|

1

| CAN – RJ

Application 1: Connect directly to AK-PC

Application 2: Connect directly to graphical display, MMIGRS2. Activate the termination on the graphical display.

• Only used in application 1

LED indication:
Two sets of Light Emitting Diodes make it possible to follow the operation status of the valve and the controller.

LED A: Two status LEDs indicate power and controller operation

Power-up:

Normal operation:

LED B: Two status LEDs to indicate valve operation

Commonly used parameter identification in application 2

Note: In application 1, the most commonly used parameters are conÿgured in the AK-PC. Default commissioning password: “300”

1=Application 1 – High Pressure expansion module 2=Application 1 – Receiver Expansion module 3=Application 2 – Valve Driver

Note: changing this setting also changes the EKE 1P address, causing communication with the graphical display to stop. Communication will resume after a power cycle.

AI valve input scale| 2| 0 = 0 – 5 V
| | 1 = 1 – 5 V
| | 2 = 0 – 10 V
| | 3 = 2 – 10 V
| | 4 = 5 – 0 V
| | 5 = 5 – 1 V
| | 6 =10 – 0 V
| | 7 =10 – 2 V
| | 8 = User Defined
Valve configuration| 0| Application mode 1 : Set from AK-PC except if the valve type is set to User Defined in AK-PC then it is
| | according to below list (see Application mode 2)
| | Application mode 2 :
| | 0 = no valve, 1 = UserDef
| | 2 = ETS 12C, 3 = ETS 24C, 4 = ETS 25C, 5 = ETS 50C, 6 = ETS 100C
| | 7 = ETS 6, 8 = ETS 12.5, 9 = ETS 25, 10 = ETS 50, 11 = ETS 100
| | 12 = ETS 250, 13 = ETS 400
| | 14 = KVS 2C, 15 = KVS 3C, 16 = KVS 5C
| | 17 = KVS 15, 18 = KVS 42
| | 19 = CCMT 0, 20 = CCMT 1
| | 21 = CCMT 2, 22 = CCMT 4, 23 = CCMT 8, 24 = CCMT 16, 25 = CCMT 24
| | 26 = CCMT 30, 27 = CCMT 42
| | 28 = CCM 10, 29 = CCM 20, 30 = CCM 30, 31 = CCM 40
| | 32 = CTR 20
| | 33 = CCMT 3L, 34 = CCMT 5L, 35 = CCMT 8L

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