SC300 Handbook
140
Copyright © 2007-2018 Eaton Corporation. All Rights Reserved.
IPN 997-00012-03 B2 Issue B2 July 2018
Connector
Type
Purpose
Pin
Description
free.
3
Relay 3 Common (COM)
4
Relay 4 normally closed (NC)
5
Relay 4 normally open (NO)
6
Relay 4 Common (COM)
XH20/XH21
Digital relay outputs 5-6*
Digital outputs are voltage-
free.
1
Relay 5 normally closed (NC)
2
Relay 5 normally open (NO)
3
Relay 5 Common (COM)
4
Relay 6 normally closed (NC)
5
Relay 6 normally open (NO)
6
Relay 6 Common (COM)
XH22/XH23
Digital relay outputs 7-8
IOBGP-10/11/20/21 only
Digital outputs are voltage-
free.
1
Relay 7 normally closed (NC)
2
Relay 7 normally open (NO)
3
Relay 7 Common (COM)
4
Relay 8 normally closed (NC)
5
Relay 8 normally open (NO)
6
Relay 8 Common (COM)
XH20/XH21
Digital relay outputs 9-10
IOBGP-10/11only
Digital outputs are voltage-
free.
1
Relay 9 normally closed (NC)
2
Relay 9 normally open (NO)
3
Relay 9 Common (COM)
4
Relay 10 normally closed (NC)
5
Relay 10 normally open (NO)
6
Relay 10 Common (COM)
YH3
RJ45
DC power system digital
inputs
Digital input signals are
referenced to live bus.
1
Load Fuse Fail
2
Battery Fuse Fail
3
+12V out
4
AC Distribution Fan Fail
5
AC Distribution MOV Fail
6
0V out (system live - protected)
7
-
8
System common - protected
YH11/
YH11A
(
IOBGP-
10/11/20/21
only)
RJ45
RXP System
Communications
1
System Positive 24/48V
2
System Positive 24/48V
3
-
4
RS485-A
5
RS485-B
6
-
7
System Negative 24/48V