18

Digital Controller

E5AK/E5EK

CT Input/Potentiometer

When using the HBA function on the E5EK-AA2 Controller, connect CT input (CT) to terminal numbers 15 to 17. When monitoring the valve opening

on the E5EK-PRR2 Controller, connect the potentiometer (PTMR) to terminal numbers 15 to 17. Connect each of these inputs as follows:

For details on CT inputs, refer to Appendix, About Current Transformer in the E5AK/E5EK User’s Manual (H83/H85). For details on the potentiom-

eter, refer to the Instruction Manual for the valve connected to the Controller. The variable resistance range is 100

Ω to 2.5 kΩ.

Remote SP Input

Connect the input (RSP) to be used as the remote SP to terminal numbers 15 and 16. However, note that the remote SP cannot be used on the

E5EK-PRR2 Controller. Only 4 to 20 mA inputs can be connected. Connect the input as follows:

Event Input

Connect event inputs 1 and 2 (EV1/2) to terminal numbers 18 to 20. However, note that terminal numbers 18 to 20 cannot be used on Controllers

with a communications function. Connect the event inputs as follows:

Use event inputs under the following conditions:

10

9

8

7

6

5

4

3

2

1

20

19

18

17

16

15

14

13

12

11

21 22

23

17

16

15

17

16

15

O

W

C

CT input

Potentiometer

10

9

8

7

6

5

4

3

2

1

20

19

18

17

16

15

14

13

12

11

21 22

23

15

+

−

16

4 to 20 mA

Contact input

ON:

1 k

Ω max., OFF: 100 kΩ min.

No-contact input

ON:

Residual voltage 1.5 V max.,

OFF: Leakage current 0.1 mA max.

10

9

8

7

6

5

4

3

2

1

20

19

18

17

16

15

14

13

12

11

21 22

23

20

19

18

+

+

−

Event input 1 and 2

EV1

EV2

COM