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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
A
larm
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
A
larm #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
A
larm
Relay#2
N.C.
N.O.
6
To terminal
19 or 21
A
larm
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.