Installation

 

 

Time Duplex with a Dual Relay Board

 

 

 

 

 

Out Relay#2

 

19

Cool Relay Load

Load

 

 

 

 

N.O.

 

 

 

 

L1

Out Relay#1

N.O.

20

 

Supply

 

 

 

21

Heat Relay Load

 

 

 

L2/N

 

 

Power

Load

 

 

4

N.C. Alarm

22

1

 

 

Relay Load

5

23

 

 

Supply

 

N.O.

Relay#2

 

 

 

To terminal

 

 

 

 

 

 

Power

 

6

 

 

 

24

 

 

 

2

4 or 6

 

 

 

 

25

 

 

 

 

7

 

 

 

 

 

Load

 

 

N.C. Alarm

 

 

 

Relay Load

8

26

 

 

 

N.O. Relay#1

 

 

Supply

 

To terminal

 

 

Power

 

9

 

 

 

27

 

 

2

7 or 9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1Dual Electromechanical relays are rated at 2 Amps @120 Vac or 240 Vac or 30 Vdc. Customer should size fuses accordingly. Use Fast Blo fuses only.

2Electromechanical relays are rated at 5 Amps @ 120 Vac or 240 Vac or 30 Vdc. Customer should size fuses accordingly. Use Fast Blo fuses only.

Figure 2-11 Dual Electromechanical Relay Option Output

See Table 2-6for relay terminal connections for other Output Algorithm Types.

Load

Supply

Power

2

Load

Supply

Power

2

 

 

 

 

19

+

 

 

 

 

 

 

L1

 

 

20

Current Output

 

 

 

4–20 mA

 

 

 

 

21

 

L2/N

 

 

 

4

 

 

22

Relay Load

N.C. Alarm

 

5

23

 

N.O. Relay#2

 

To terminal

 

6

 

 

24

 

4 or 6

 

 

 

 

 

 

 

 

Relay Load

7

N.C. Alarm

25

 

8

N.O.

Relay#1

26

 

 

1

 

To terminal

9

 

27

 

 

 

 

7 or 9

 

 

 

 

 

 

 

 

Controller Load

0-1000 ohms

1When the instrument has the Current Output as shown, no Alarms are available when using the Time Proportional Duplex or Three Position Step Control Output Algorithms, as these outputs require both available relays.

2Electromechanical relays are rated at 5 Amps @ 120 Vac or 240 Vac or 30 Vdc. Customer should size fuses accordingly. Use Fast Blo fuses only.

Figure 2-12 Current Output

See Table 2-6for relay terminal connections for other Output Algorithm Types.

4/07

UDC2500 Universal Digital Controller Product Manual

27

Page 41
Image 41
Honeywell UDC2500 manual Dual Electromechanical Relay Option Output, Current Output