Datasheet

3
Connect the DC Battery Cables
(if applicable)

Connect battery cables BAT+,
BAT÷, and N to the battery cable
landings.
Note: ONLY APC Smart-UPS VT XR Battery Enclosure
(SUVTRBXRB6) must be connected to the UPS.
Connect the Communication
Cables
J106 and J108 pin connections
Note: The UPS must be connected to either a dry contact or
a 24 VDC EPO (Emergency Power Off) switch.
Note: The external EPO +24 VDC, 1500 mA circuit can be
supplied through other vendors.
Note: Always follow the pin connection procedures from
the top and work down: J106 (8-1), J108 (1-6).
EPO wiring – pin connections J108. Connect the EPO cable, using
one of the following four wiring configurations.
Pin connections J106 (UPS).
Note: When connecting the Q3 auxiliary signal, use gold-
plated N/C auxiliary switch.
Note: Reinstall the cable landing cover.

J108 pin connections:
1 Normally open EPO
2 Normally open EPO return
3 Normally closed EPO
4 Normally closed EPO return
5 +24 V SELV supply
6 SELV ground


J106 pin connections:
8 Ext. charging control return
7 External control of charging
6 Q3 active return
5 Q3 active
4 Battery measurement supply*
3 Battery unit quantity*
2 Max. battery temperature*
1 Battery measurement return*
* Should be used with APC XR
Enclosures


1
2
3
4
5
6
J108
1: Dry Contracts Normally Open
EPO circuit
EPO is activated when pin 1 is connected
to pins 3 and 5.
Connections: 2-4-6, 3-5 and
1 =>
EPO circuit
1
2
3
4
5
6
J108
2: +24 V Normally Open
EPO is activated when an isolated SELV 24
VDC voltage is supplied on pin 1 with
reference to pin 2.
Connections: 3-5 and 4-6.
1
2
3
4
5
6
J108
3: Dry Contacts Normally Closed
EPO circuit
EPO is activated when a connection from
pin 3 to pin 5 is opened.
Connections: 4-6.
1
2
3
4
5
6
J108
4: +24 V Normally Closed
EPO circuit
EPO is activated when a SELV 24 VDC
voltage is removed from pin 3 with
reference to pin 4.
8
7
6
5
4
3
2
1
J106
Q3 switch
Charging control switch
J200 (XR Batteries)
4
3
2
1
Pins 1 to 4 are for battery measurement (only
applicable to APC XR Battery Enclosures).
Pins 5 and 6 are for external maintenance
bypass Q3 (auxiliary switch N/C type).
When Q3 is closed, signals are fed back to the
UPS controller.
Pins 7 and 8 are for external charge control.
When 7 and 8 are closed, the UPS charges
batteries with a pre-defined percentage (0-25-
50-75-100%) of the maximum charging power.
To be used in generator applications, or if
special codes require control of charging.
When Q3 is closed, signals are fed back to the
UPS controller.