FIREPOWER SK-4 - Manual

Description
The four zone SK-4/E is a 24 VDC
FACP that provides four Class B
initiating device circuits and two Class
B notification appliance circuit (NAC).
The SK-4/E NAC protocol includes the
ability to silence audible devices while
strobes continue to flash, using only a
single pair of wires. The SK-4/E is also
compatible with conventional input
devices such as two- and four-wire
smoke detectors, pull stations,
waterflow devices, tamper switches and
other normally-open contact devices.
Activation of a compatible smoke
detector or any normally-open fire
alarm initiating device activates audible
and visual signaling devices, illuminates
an indicating LED, sounds the piezo
sounder at the FACP, activates the
FACP alarm relay, and operates an
optional module used to notify a remote
station or initiate an auxiliary control
function.
The SK-4/E is compatible with System
Sensor
® I 3 detectors providing
advanced features such as drift
compensation, maintenance alert, and
freeze warning. Automatic
synchronization of audio/visual devices
is provided, using three selections for
manufacturer protocol.
Features
• Four Style B (Class B) initiating
device circuits (IDCs)
• Two Style Y (Class B) notification
appliance circuit (NAC)
• Optional module converts all IDCs
and NACs to Class A (PN SK-CAC4)
• Support for synchronization of
standard ANSI audible signals and
ADA compliant strobes per NFPA 72
• Selectable for System Sensor,
Wheelock, and Gentex protocols
• Selective silence feature allows
manual silence of horns while strobes
continue to flash on the same NAC
• Program for combination tamper
supervisory monitor and waterflow
alarm on one zone
• Silent or audible walk test operation
mode
• Alarm verification selectable per zone
• Program each zone for supervisory or
fire with separate red and yellow
LEDs
• Disable switches provided per zone
• Program NACS for
– Silence inhibit
– Auto silence
– Strobe synchronization
– Temporal or steady signal
– Silenceable or nonsilenceable
– Disable
• Form C alarm, trouble, and
supervisory relays
• 3A total usable current
• 6A total usable current with optional
second transformer (PN SK-TRM24
or SK-TRM24E)
• Optional dress panel (PN SK-DP2/4)
Electrical Specifications
SK-4 Primary AC: 120 VAC @ 50/60
Hz, 2.3A
SK-4E Primary AC: 240 VAC @ 50 Hz,
1.15A
Wiring: 14 AWG (2.0 mm
2 ) with 600 V
insulation min
Initiating Device Circuits (IDCs)
Operating Voltage: 22 VDC nominal;
power-limited
Standby Current: 4 mA
Alarm Current: 15 mA min
Short-circuit Current: 40 mA max
Loop Resistance: 100Ω max
EOL Resistor: 4.7K Ω, 1/2 watt
NACs
Signaling Current: 2.5A @ 24 VDC
with standard transformer or 5A
total (2.5A per NAC) with additional
optional transformer, power-limited
EOL Resistor: 4.7K Ω, 1/2 watt
Form C Relays
Types: Trouble, alarm, and
supervisory
Contact Ratings: 2A @ 30 VAC,
resistive
SK-4 & SK-4E Fire Alarm
Control Panel
The SK-4 and SK-4E (SK-4/E) are four zone conventional fire alarm
control panels (FACPs) that bring the latest in microprocessor technology
to conventional fire controls. The SK-4 is a 120 VAC FACP and the SK-4E
is a 240 VAC FACP. These FACPs provide reliable fire signaling protection
for small- to medium-sized commercial, industrial, and institutional buildings.
For more information about the SK-4/E system, or to locate your nearest source, please call
1-800-446-6444, or in Minnesota, call 763-493-6435.
4-zone fire protection at a price that won’t
burn your budget.
FIRE ALARM CONTROL PANEL
SK-4