1-3
November 2002
06-235975-001
Kidde Gemini II System
1-4.2
Power Supply and Battery Backup
The power supply operates from either 120 Vac 50/60 Hz
or 240 Vac 50/60 Hz. Besides powering the system, the
power supply also charges a standby battery set which pro-
vides backup in case of loss of power from the AC source.
While the battery charger is capable of charging batteries
of capacity from 12 to 66 AH at 24 Vdc, the actual battery
capacity used for an application is a function of the panels
components, devices and configuration. Please see Appen-
dix A for more details on how to perform battery capacity
calculations.
The power supply includes two auxiliary 24 Vdc power out-
puts; one is resettable and the other non-resettable. The
non-resettable auxiliary power supply can be used to pro-
vide power to the Remote Display Units as described in
Paragraph 1-6.2.
Detection Circuit # 1
Style B or D
Detection Circuit # 2
Style B or D
Smoke and
Heat Detectors
Waterflow Input
Style B or D
Sprinkler System
Pull Station
Manual Release
Abort/Supv 2
Style B
Abort Station
Supervisory 1
Release Circuit
Auxiliary Power 1
24 Vdc
24 Vdc
(Not resettable)
Auxiliary Power 2
Inputs from
field devices
Outputs
RS485
Port
RS-485 Data Highway
Clean Agent Control Heads
Deluge System Solenoid
CO
2
System Control Heads
To Remote Display Units
To and from other
System Units
Form C Alarm Relay
Form C Trouble Relay
Form C Prog. Relay
Auxiliary Functions
- Equipment Shutdown
- Repeat Annunciation
- DACT (MCP only)
Main Control Panel and Remote Hazard Units
PUSH
PULL
FIRE
FIRE
PUSH/HOLD
SUPPRESSION
SYSTEM ABORT
Style B
Style B
5 Form C Prog. Relays
on Option Relay Board
Indicating Circuit # 1
Style Y or Z
Indicating Circuit # 2
Style Y or Z
Audible and Visual
Indicating Devices
All relays except those on ORB
are applicable to the MCP only.
KIDDE
Style Y
AGENT
RELEASING
LOGIC
Figure 1-3. Input and Output: Main Control Panel and Remote Hazard Unit
The power supply monitoring circuit provides a trouble sig-
nal if any of the following conditions occur:
Loss of AC input or if AC power falls below 85% of
nominal. This causes an immediate change-over to
battery operation and a trouble signal after 30 seconds.
Detection of a ground fault.
Charger output trouble in the charger circuit.
The battery circuit is monitored and a trouble message re-
sults under the following conditions:
The battery is faulty or it was installed backwards.
The battery is disconnected.
Battery voltage falls below 18.6 V (this condition causes
the battery to disconnect and can only be cleared when
primary AC main power is restored).
1-4.3
Hazard Block Inputs
Inputs and outputs for the Main Control are shown in Fig-
ure 1-3 and summarized below.
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