Honeywell UDC2500 - Manual (Page 38)

Installation
24 UDC2500 Universal Digital Controller Product Manual 4/07
Volts Input
mV or Volt
source
Milliamps Input
–
+
22 mA+
23 V+
24 –
1
Input #2
Voltage
source
The dropping resistor for milliamp inputs is internal to the controller. 1
22 mA+
23 V+
24 –
Power
Supply
– +
Xmitter
+
–
Figure 2-7 Input 2 Connections
Alarm
Relay#1
Output
Relay#1 L1
L2/N
4
5
8
9
N.O.
N.C.
N.O.
Relay Load
Load
Supply
Power
Time Simplex
1
2
2
Alarm #2 is not available with Time Proportional Duplex or Three Position Step Control unless the Dual Relay Option is used.
Electromechanical relays are rated at 5 Amps @ 120 Vac or 240 Vac or 30 Vdc.
Customer should size fuses accordingly. Use Fast Blo fuses only.
N.C.
19
20
21
22
23
24
25
26
27
Time Duplex
Alarm
Relay#2
N.C.
N.O.
6
To terminal
19 or 21
Alarm
Relay#1
Output
Relay#1 L1
L2/N
4
5
7
8
9
N.O.
N.C.
N.O.
N.C.
19
20
21
22
23
24
25
26
27
Output
Relay#2 N.C.
N.O.
6
Relay Load
Load
Supply
Power
2
To terminal
19 or 21
7
To terminal
4 or 6
Relay Load
To terminal
7 or 9
Relay Load
2
2
Load
Supply
Power
Load
Supply
Power
To terminal
4 or 6
Relay Load
To terminal
7 or 9
Relay Load
2
2
Load
Supply
Power
Load
Supply
Power
1
Figure 2-8 Electromechanical Relay Output
See Table 2-6 for relay terminal connections for other Output Algorithm Types.