Control Wiring - Toshiba 4400 Series Installation And Operation Manual

9.7

Control Wiring

TB3 provides terminals for connecting the UPS to external control functions. The functions of the terminal pairs are given
below.
TB3
(NO - Normally Open)
Terminals
(NC - Normally Closed)
1 & 2
3 & 4
5 & 6
7 & 8
(Configurable NO or NC
9 & 10
11 & 12
13 & 14
15 & 16
17 & 18
19 & 20
* Dry contacts.
** Controller board is programmed to accept momentary signals only. Signal duration of 20 seconds or greater will trigger
the warning LBABNL (Local Button Abnormal)
TB3 Terminals
1 thru 20
54
TABLE 9.6: TB3 TERMINAL FUNCTIONS
Status* ** Function
,
NO* Bypass Status - Bypass / Gnd (Closed when UPS is in Bypass mode)
NO* EPO Status (Closed when UPS is shut down)
NO* Remote EPO (Closing external switch will shut down the UPS)
Default: NC* Battery Breaker Open/Battery Overheat Sense (Batt Cab CB Aux
Switch)
from Display)
NO** P24 A3 / Remote Run (Closing user-supplied external switch will
Transfer UPS from Bypass to Online)
NO** P24 A3 / Remote Stop (Closing user-supplied external switch will
transfer the UPS from Online to Bypass)
NO** P24 / Charge Stop (Closing user-supplied external switch will stop the
UPS Battery Charger circuit)
– Shunt Trip (Places Battery Breaker shunt trip coil in parallel with UPS
MCCB, so EPO will open both UPS and BC circuit breakers simulta-
neously)
NO (Not Assigned)
NO (Not Assigned)
TABLE 9.7: TB3 TERMINAL FASTENING TORQUE
Wire Size
14 – 16 AWG
Fastener Torque
8 in-lb (0.9 N∙m)
4400 Series Installation and Operation Manual – 64527-008