14

Digital Controller

E5AK/E5EK

CT Input/Potentiometer

When using the HBA function on the E5AK-AA2 Controller, connect CT input (CT) to terminal numbers 15 to 17. When monitoring the valve opening

on the E5AK-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 21 and 22. Only 4 to 20 mA inputs can be connected. Connect the input

as follows:

10

9

8

7

6

5

4

3

2

1

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

31 32

33

17

16

15

17

16

15

C

W

O

CT

CT input

Potentiometer

10

9

8

7

6

5

4

3

2

1

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

31 32

33

21

+

−

22

4 to 20 mA