26
INA 15092:I 05/30/01
2.7.3 R
EMOTE
S
UPPLY
When the INA is powered from a source
external to the INA cabinet
, it must be connected as illustrated in
Figure 2.7.3-1
.
An optional connection is illustrated, and is normally used only when the INA is being powered from an external source.
For calculation of the primary and secondary power requirements, refer to Appendix A of this document.
MPS-24A/MPS-24AE - TB3 Terminals* 4 3
MPS-24B/MPS-24BE - TB2 Terminals* 4
3
-
+
+
-
Nonresettable 24 VDC remote
power supply listed for Fire
Protective Signaling*
To Other Devices*
* Warning
When powering ACS Series Annunciators or other
EIA-485 devices from these terminals use separate
wires. Do not "T-Tap" or damage may result during
abnormal conditions.
Figure 2.7.3-1 INA 24 VDC External Power Connection
-
+
Keltron Printer Power (Model
No. VS4095/5)
SW1
2.8 A
PPLYING
/R
EMOVING
P
OWER
TO
THE
INA
After completing the proper installation of all cables and components, apply power in the following manner:
Apply AC power
Connect the battery/secondary power terminals as described in Section 2.7.3 of this manual
When servicing the INA, perform the following steps before removing or connecting any power or supervisory cables:
Remove all EIA-485 connections
Remove battery/secondary power
Remove AC power
Wait 60 seconds
WARNING:
Never remove or install boards, internal cables or components with power applied. Failure to follow the
procedure outlined above can result in irreparable damage to the system components. This damage may adversely affect
the operation of this control unit but its effect may not be readily apparent.
J4
TB1
TB3
TB2
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