1. Honeywell – UDC2300  UDC2500 Conversion
Gnd.
L2/N L1 4 5 6 7 8 9 19 20 21 22 23 24 25 26 27
Input #1
Output 1
Power
Communication
Input #2
Auxiliary Output
Digital Input
Gnd 10 11 12 13 14 15 16
More terminals, More features:
UDC2300 : 16 terminals.
UDC2500 : 27 terminals.
New Case design
NEMA 4X Standard
The 2 instruments are not case compatible.
Wiring is not identical
Honeywell – UDC2300  UDC2500 Conversion
[C]
Output 2
or Alarm 2
Communication,
Auxiliary Output,
Alarm 1 18 17

2. Honeywell – UDC2300  UDC2500 Conversion24 16
23 for Volts
22 for ma 15
13 if Aux. Output
11 if Digital Input
18 if Communication 14
12 if Aux. Output
10 if Digital Input
17 if Communication 13 8 12
9 if jumper is set for N.O.
7 if jumper is set for N.C. 11 5 10
6 if jumper is set for N.O.
4 if jumper is set for N.C. 9 26 27 7 25 6
19 if jumper is set for N.C.
21 if jumper is set for N.O.
19 if Current Output 20
21 if Current Output 4
L2/N L1
Ground
UDC 2300
UDC 2500
Gnd
Power
Input 1
Output 1
Out 2 or
Alarm 2
Alarm 1
EXT. Option
Input 2
Honeywell – UDC2300  UDC2500 Conversion
[C]
Gnd. 18 17 19 21 22 23 DI
Aux. Out
Comm