POWERPATH PS-8 User manual

POWERPATH
PS-8 (105531)
PS-8E (100263)
PS-6 (105530)
PS-6E (100262)
NAC EXTENDER
POWER SUPPLIES
Installation Instructions
273 Branchport Avenue, Long Branch, NJ 07740-6899 Ph: [phone] Fax: [phone]
Web Site: www.coopernotification.com e-mail: [e-mail]
Copyright 2008 Cooper Wheelock Inc., dba Cooper Notification. All rights reserved.
P84905-001A

P84905-001 A Sheet 2 of 36
Thank you for using our products.
Use this product according to this instruction manual.
Please keep this instruction manual for future reference.
TABLE OF CONTENTS
1.0 - INTRODUCTION AND SPECIFICATIONS 3
1.1 - INTRODUCTION 3
1.2 - SPECIFICATIONS 4
1.3 - TERMINOLOGY 5
2.0 - INSTALLATION INSTRUCTIONS 6
2.1 - UNPACKING 6
2.2 - MOUNTING 6
2.3 - WIRING 8
3.0 – SETTING THE DIP SWITCHES 14
3.1 – CONTROL PC BOARD 14
4.0 – APPLYING POWER TO THE POWER SUPPLY PANEL 16
5.0 - TROUBLESHOOTING 17
6.0 – OPERATION EXAMPLES 22
7.0 - BATTERY CALCULATION SHEETS 31
7.1 - PS-8 CALCULATION SHEET 31
7.2 - PS-6 CALCULATION SHEET 32
8.0 - LIST OF COMPATIBLE AUXILIARY DEVICES 33
9.0 - WARRANTY STATEMENT 34
10.0 APPENDIX A – LIST OF COMPATIBLE NAC DEVICES 35
LIST OF FIGURES
FIGURE 1: PS-8 Enclosure Layout 5
FIGURE 2: PS-6 Enclosure Layout 6
FIGURE 3: PS-8 Mounting Dimensions 7
FIGURE 4: PS-6 Mounting Dimensions 8
FIGURE 5: AC and DC Input Wiring Paths 9
FIGURE 6: Power Supply/Battery Charger PC Board 10
FIGURE 7: NAC Extender Wiring 11
FIGURE 8: Control PC Board 12
FIGURE 9: Control PC Board DIP Switches 14
FIGURE 10: AC Power Terminals on the Power Supply PC Board 16
FIGURE 11: Batteries Connected in Series 16
FIGURE 12: Power Supply/Battery Charger PC Board Trouble LED
Locations 18
FIGURE 13: Control PC Board Trouble LED Locations 19
LIST OF TABLES
TABLE 1: Power Supply/Battery Charger PC Board Terminal Identification 10
TABLE 2: Control PC Board Terminal Identification 12
TABLE 3: Control PC Board DIP Switch Settings 14
TABLE 4: Power Supply/Battery Charger PC Board LED Identification 17
TABLE 5: Control PC Board LED Identification 17
TABLE 6: Power Supply/Battery Charger PC Board LED Trouble
Indicators 18
TABLE 7: Control PC Board LED Trouble Indicators 19
TABLE 8: Control PC Board Trouble Priority Identification 20
TABLE 9: Control PC Board Coded Trouble Identification 20

P84905-001 A Sheet 3 of 36
NOTE: All CAUTIONS and WARNINGS are identified by the symbol . All WARNINGS are printed in bold capital
letters.
READ THIS INSTRUCTION MANUAL CAREFULLY. FAILURE TO COMPLY WITH ANY OF
THE FOLLOWING INSTRUCTIONS, CAUTIONS, AND WARNINGS COULD RESULT IN
IMPROPER APPLICATION AND/OR OPERATION OF THESE PRODUCTS IN AN
EMERGENCY SITUATION, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS
INJURY OR DEATH TO YOU AND/OR OTHERS.
1.0 INTRODUCTION AND SPECIFICATIONS:
1.1 INTRODUCTION
The POWERPATH NAC Extender Power Supply is available in two models: the PS-8 and the PS-6. The PS-8
differs from the PS-6 in the NAC output current and in the enclosure size and the PS-8 enclosure can mount up
to two addressable control modules. All other features, indicators and capacities are the same.
The PS-8 is an 8 Amp, 24VDC, filtered and regulated, supervised remote power supply/charger used for
supervision and expanded power driving capability for Fire Alarm Notification Appliance Circuits. The PS-8 may
be connected to any 12VDC or 24VDC Fire Alarm Control Panel (FACP) by using Notification Appliance Circuits
(NAC) or a “Dry Contact(s)”. Primary applications include NAC expansion (supports ADA requirements) and
auxiliary power to support system accessories. This unit provides filtered and regulated 24VDC, 8 Amp up to
four (4) Class "B", two (2) Class “A”, or two (2) Class “B” and one (1) Class “A” Notification Appliance Circuits.
Additionally, an auxiliary power output can provide constant power of up to 0.24 Amps for 24 hours and up to
0.02 Amps for 60 hours, or managed power up to 2.5 Amps in a non-alarm condition and when AC power is
applied to the panel. The PS-8 also contains a battery charger capable of charging up to 33 Amp/Hour (Ahr) of
battery backup. The PS-8’s NAC outputs can also be used as UL-1481 Compliant power supply outputs. When
configured this way, the maximum continuous current rating is 3 Amps per power supply output and 4 Amps
maximum total current for all continuous duty power supply outputs.
The PS-6 is a 6 Amp, 24VDC, filtered and regulated, supervised remote power supply/charger used for
supervision and expanded power driving capability for Fire Alarm Notification Appliance Circuits. The PS-6 may
be connected to any 12VDC or 24VDC Fire Alarm Control Panel (FACP) by using Notification Appliance Circuits
(NAC) or a “Dry Contact(s)”. Primary applications include NAC expansion (supports ADA requirements) and
auxiliary power to support system accessories. This unit provides filtered and regulated 24VDC, 6 Amp up to
four (4) Class "B", two (2) Class “A”, or two (2) Class “B” and one (1) Class “A” Notification Appliance Circuits.
Additionally, an auxiliary power output can provide constant power of up to 0.075 Amps for 24 hours, or
managed power up to 2.5 Amps in a non-alarm condition and when AC power is applied to the panel. The PS-6
also contains a battery charger capable of charging up to 33 Amp/Hour (Ahr) of battery backup. The PS-6’s
NAC outputs can also be used a UL-1481 Compliant power supply outputs. When configured this way, the
maximum continuous current rating is 3 Amps per power supply output and 4 Amps maximum total current for
all continuous duty power outputs.
Each NAC Extender Power Supply allows two FACP NAC circuits or two “Dry” contact closures to activate it
when connected to the inputs. These inputs can then be directed to control supervision and power delivery to
any combination of the four (4) outputs.
Each NAC output is rated at 3.0 Amps (Class "B") or 3.0 Amps (Class "A") and can be programmed to
generate a steady or Code 3 Temporal Horn sound, and a strobe output under alarm condition. Total
load for the PS-8 NAC circuits shall not exceed 8.0 Amps. Total load for the PS-6 NAC circuits shall not
exceed 6.0 Amps.
Each NAC Extender Power Supply, under non-alarm condition provides independent loop supervision for Class
“A” and Class “B” FACP NAC circuits. In the event of a loop trouble, the FACP will be notified via the panel
steered input (IN1 or IN2). In addition there are common trouble output terminals (used to indicate a loop
trouble) and common trouble input terminals (used generically by any initiating circuit).
Wheelock horns/strobes, strobes and horns with synchronizing capability can be utilized with both the PS-8 and
the PS-6. Audibles can be silenced with only two wires outputs. Additionally, the POWERPATH can provide a
temporal coded signal for appliances that can utilize it.

P84905-001 A Sheet 4 of 36
1.2 SPECIFICATIONS
Approvals:
•Pending: FM.
•Pending: MEA approved – NYC Dept. of Buildings.
•Pending: California State Fire Marshall (CSFM) approved.
•Pending: Bureau of Fire Protection (BFP) Chicago.
•NFPA 72 compliant.
•Pending UL Listed 1481 Standard for Power Supplies for Fire-Protective Signaling Systems.
•Environmental: Approved for indoor dry locations.
Inputs:
•240VAC, 50/60Hz, 3.22 Amps (PS-8E), 2.42 Amps (PS-6E) Operating Power in Alarm.
•120VAC, 50/60Hz, 5.32 Amps (PS-8), 4.25 Amps (PS-6) Operating Power in Alarm.
•24VDC Sealed Lead Acid Battery Backup Connection.
•Two (2), 12VDC or 24VDC NAC Initiating Circuits (8-33VDC at 5mA).
•Two (2) “Dry” Contact initiating Circuits.
•Accepts two Class “A” or two Class “B” circuit inputs.
•Built in battery charger for sealed lead acid or gel type batteries. Maximum charging current: 0.75 Amps.
Outputs:
•24VDC power limited synchronized outputs. Up to 50 NAC devices per output, maximum line impedance
1.46 Ohms per NAC.
•8 Amp in alarm supply current for the PS-8 (6 Amp in alarm supply current for the PS-6).
•Capable of four (4), Class "B" regulated outputs (Maximum of 3 Amps on an output.)
•Capable of two (2) Class “A” regulated outputs (Maximum of 3 Amps on an output.)
•Capable of one (1) Class “A” regulated outputs and two (2) Class “B” regulated outputs (Maximum of 3 Amps
on an output.)
•Temporal (Code 3) or constant voltage output generation.
•Built-in Wheelock synchronization mode that can be fed to any or all of the output circuits.
•Input and output can be synchronized with “IN FOLLOWER” mode.
•Continuous duty NON-RESETTABLE output configuration 4 Amps of maximum continuous duty current.
(Maximum of 3 Amps on an output for specific applications.) Continuous power outputs are not battery
backed up.
•Audible silence capability.
•Filtered and electronically regulated output.
•PS-8 - 0.02 Amp continuous auxiliary power for 60 hours, which is power limited and battery backed up.
•PS-8 - 0.024 Amp continuous auxiliary power for 24 hours, which is power limited battery backed up.
•PS-6 - 0.075 Amp continuous auxiliary power for 24 hours, which is power limited battery backed up.
•2.5 Amps managed auxiliary power that turns off during alarm or battery backup, and automatically restores.
•Multiple POWERPATHs can be synchronized through the SBUS terminals, see Chapter 6.0 on sheet 22 for
example drawings.
Supervision:
•Compatible with 12VDC or 24VDC FACP.
•Signaling appliance loops are supervised and steered to either IN1 or IN2.
•10K Ohm, 1 Watt (Wheelock Model #MPEOL) End of Line Resistor (EOLR) for supervision of all outputs.
•Common input and output trouble circuits.
•Automatic switchover to standby battery when AC fails.
•Short circuit protection with auto reset.
•Input and output status LED indicators.
•AC fail supervision (Form “C” contact, 1 Amp 24VDC).
•Battery presence and low battery supervision (Form “C” contact, 1 Amp 24VDC).
•Ground Fault Detection, with the ability to detect ground faults on individual circuits.
Minimum Impedance = 0 Ohms.
Parameter Description
Operating Temperature 0 to 49 °C (32 to 120 °F)
Storage Temperature -20 to 70 °C (-4 to 158 °F)
Humidity, Non-condensing 85 ± 5% at 30 ± 2 °C (8 6 ± 4 °F)

P84905-001 A Sheet 5 of 36
1.3 TERMINOLOGY
CLASS “A” = STYLE Z
CLASS “B” = STYLE Y
FACP = Fire Alarm Control Panel
EOLR = End of Line Resistor
NAC = Notification Appliance Circuit
SM = Wheelock Sync Module with single output
DSM = Wheelock Dual Sync Module with two outputs
C = Common
NC = Normally Closed
NO = Normally Open
Ahrs = Ampere/Hours
Enclosures
Figure 1 shows the location of the PC boards and knockouts on the PS-8 panel.
IN1 IN2CC1 CC2 SBUS IN SBUS
RET SIL
INRET1 RET2 COM NONC TROUBLE AUX OUT NAC1
OUT NAC2
OUT NAC3 OUT
TB1 TB2
TB3
TB2
TB1 J2
D2
D9
D37
D3D4
D5D6D7D8
D36 D35 D34
D21
D24
SW5
SW2
SW1
SW3
SW4
SW6
IN1FOLLOWER
IN2 FOLLOWER
TROUBLELATCH
SBUSIN1/IN2
GF DETECT
SBUS SYNC/TEMPORAL
SYNCPROTOCOL
SYNCPROTOCOL
NAC1-NAC2CLASS B/A
NAC3-NAC4CLASS B/A
AUXPOWERCP/MP
SBUS MASTER/REMOTE
NAC1SYNC/TEMPORAL
NAC2SYNC/TEMPORAL
NAC3SYNC/TEMPORAL
NAC4SYNC/TEMPORAL
NAC1IN1/IN2
NAC2IN1/IN2
NAC3IN1/IN2
NAC4IN1/IN2
Figure 1: PS-8 Enclosure Layout
Figure 2 shows the location of the PC boards and knockouts on the PS-8 panel.
Power Supply/Battery
Charger PC Board
Control PC Board
Battery Compartment for
two – 12V 12Ahrs
Rechargeable Batteries
1/2” and 3/4" Knockouts (14)
2”, 2 ½”, and 3” Knockouts (2)

P84905-001 A Sheet 6 of 36
1/2” and 3/4" Knockouts (13)
IN1 IN2CC1 CC2 SBUS IN SBUS RET SIL INRET1 RET2 COM NO
NC
TROUBLE AUX OUT NAC1
OUT NAC2 OUT NAC3 OUT
TB1 TB2
TB2
TB1 J2
SW1
D2
D9
D37
D3D4
D5D6D7D8
D36 D35 D34
D21
D24
SW5
SW2
SW1
SW3
SW4
SW6
IN1 FOLLOWER
IN2 FOLLOWER
TROUBLELATCH
SBUSIN1/IN2
GF DETECT
SBUSSYNC/TEMPORAL
SYNCPROTOCOL
SYNC PROTOCOL
NAC1-NAC2 CLASS B/A
NAC3-NAC4CLASS B/A
AUX POWER CP/MP
SBUSMASTER/REMOTE
NAC1SYNC/TEMPORAL
NAC2SYNC/TEMPORAL
NAC3 SYNC/TEMPORAL
NAC4SYNC/TEMPORAL
NAC1IN1/IN2
NAC2IN1/IN2
NAC3 IN1/IN2
NAC4IN1/IN2
Figure 2: PS-6 Enclosure Layout
2.0 INSTALLATION INSTRUCTIONS:
NOTE: The POWERPATH NAC Extender Power Supply shall be installed in accordance with the National Fire
Protection Association (NFPA), National Electrical Code (NEC) and all applicable state and local regulations.
2.1 UNPACKING
The POWERPATH was carefully checked before leaving the factory. Inspect shipping container and unit
carefully for indications of improper handling. If damage is detected, make an immediate claim to the carrier.
Remove the POWERPATH from the shipping container and check that the door lock keys, door lock, and
battery connection wires are inside. Make sure the printed circuit boards are within their proper packaging of
the enclosure.
2.2 MOUNTING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT
TO RAIN OR MOISTURE.
This product is not intended for use in hazardous locations as defined by the National
Electrical Code (NEC) and by the National Fire Protection Association (NFPA).
A Mount the POWERPATH in the desired location using the mounting dimensions in Figure 3 (PS-8) and
Figure 4 (PS-6).
B. Mount the panel in an indoor and dry area that does not exceed a temperature range of 32°F to 120°F (0°
C to 49°C) and a humidity equal to 10% to 85% at 86°F (30°C) non-condensing.
NOTE: When mounting on interior walls, use proper screw anchors in plaster. When mounting to concrete,
especially when moisture is expected, first attach a piece of ¾ inch plywood to the concrete surface.
Attach the POWERPATH to the plywood.
C. Remove desired knockouts and mount conduit and conduit fittings to the enclosure.
Battery Compartment for
two – 12V, 7Ahrs
Rechargeable Batteries
Power Supply/Battery
Charger PC Board
Control PC Board

P84905-001 A Sheet 7 of 36
NOTE: All dimensions shown are measured in inches.
KNOCKOUTSTYP.
17X0.882+/-.023& 01.117+/-0.23
FLUSHON OUTSIDEOF ENCLOSURE
ORIENTATION OPTIONAL
10.0" 5.5"
14.8"
16.7"
Figure 3: PS-8
Mounting Dimensions
DIMENSIONS (H x W x D) – 16.7” x 14.8” x 5.5”

P84905-001 A Sheet 8 of 36
10.3"
12.8"
16.7"
3.0"
Figure 4: PS-6
Mounting Dimensions
DIMENSIONS (H x W x D) – 16.7” x 12.8” x 3”
2.3 WIRING
Review the Operation Section (4.0) in order to select the proper hook-up and use of the POWERPATH.
Set switches and wire the POWERPATH as follows: Terminal locations for the Power Supply/Battery Charger
PC board are shown in Figures 5 and 6. Terminal locations for the Control PC board are shown in Figure 7.
NOTE: The maximum current on a Class “A” or “B” output is 3 Amps with the rest of the NAC Extender
output current divided among the remaining circuits.
DO NOT CONNECT WIRING TO THE AC INPUT SOURCE OR TO THE BATTERIES UNTIL ALL WIRING
AND ALL SWITCH SETTINGS HAVE BEEN MADE
POWER LIMITED AND NON-POWER LIMITED WIRING SHALL BE SEPERATED AND SHALL NOT BE
WITHIN 1/4" OF EACH OTHER. NON POWER LIMITED WIRE SHALL BE SEPERATED FROM PC BOARDS
BY 1/4".
Power Supply/Battery Charger PC Board
NOTE: Sealed Lead Acid Batteries shall be used for backup batteries.

P84905-001 A Sheet 9 of 36
POWER
D9
12VDC
BATTERY 12VDC
BATTERY
TB3
TB1 J2
L
N
NO
COM
NC BATTERY
IN1 IN2CC1 CC2 SBUS
IN SBUS
RET SIL
IN
RET1 RET2 COM NO
NC
TROUBLE AUX
OUT NAC1
OUT NAC2 OUT NAC3 OUT NAC4 OUT
TB1 TB2
SW2
SW1
SW3
SW4
SW6
IN2 FOLLOWER
IN1 FOLLOWER
TROUBLELATCH OFF/ON
SBUSIN1/IN2
SBUS SYNC/TEMPORAL
SYNCPROTOCOL
SYNC PROTOCOL
NAC1-NAC2 CLASS A/B
NAC3-NAC4 CLASS A/B
AUX POWER CP/MP
SBUSMASTER/REMOTE
NAC4 SYNC/TEMPORAL
NAC3 SYNC/TEMPORAL
NAC2 SYNC/TEMPORAL
NAC1 SYNC/TEMPORAL
NAC4 IN1/IN2
NAC3 IN1/IN2
NAC2 IN1/IN2
NAC1 IN1/IN2
TB6 TB3 TB4
D1
IN1TROUBLE
CONNECT THE BATTERIES IN SERIES
BY CONNECTING THE OTHER + AND -
TERMINALS TOGETHER
BLACK
GREEN
WHITE
120VAC 50-60Hz NON-POWERLIMITED(PS-6, PS-8)
240VAC 50-60Hz NON-POWERLIMITED(PS-6E, PS-8E)
24VDC BATTERY BACKUP
NON-POWER LIMITED
TB2
GND
GF DETECT ONN/OFF
D31
D36
INPUT1
INPUT2
D38
SILENCE
D2
GENERALTROUBLE
D30
IN2TROUBLE
D37
ACTIVE
SW5
D40
D3: GROUND FAULT TROUBLE
D4-D8: SEE
TABLE 9
< D8-D4 >
SYNC BUS
GROUND FAULT
LOCATOR
D21
AC LOSS TRB
D24
BATTERY
POWER
D36
D35
D34
D38
ACPOWER
BATTERYTROUBLE
BATTERYCHARGERTROUBLE
MICROPROCESSORTROUBLE
F1
10AMP
250VAC
F2
10AMP
250 VAC
Figure 5: AC and DC Input Wiring Paths
A. Install the battery wires to the battery terminals (TB3) and dress them down to the back of the enclosure,
observing ¼” separation from power limited wiring.
B. Wire the AC LOSS terminals as applicable.
C. Install the battery insulation cover plate over the battery terminals, folding side facing the door. Ensure that
the battery wires maintain ¼” separation from power limited wiring.

P84905-001 A Sheet 10 of 36
TB3
TB1 J2
NO
COM
NC
BATTERY
TB2
GND
L
N
D36 D35 D34
D21 D38
POWER
BATTERYTROUBLE
BATTERYCHARGERTROUBLE
MICROPROCESSORTROUBLE
ACLOSSTRB
D24
BATTERY
POWER
JP1
ACLOSS DELAY
JP1 IN = 0 MIN
JP1 OUT= 170 MIN
Figure 6: Power Supply/Battery Charger PC Board
Table 1: Power Supply/Battery Charger PC Board Terminal Identification
Terminal Block
Identification
Numbers (Figure 1)
Terminal
Identification
Function/Description
TB1 - 1,2,3 AC Trouble Form “C” contacts rated 24VDC at 1 Amp used for external trouble alerts.
TB2 - 1,2,3 AC Input Input power terminals for 120VAC, 50 to 60 Hz. Non-Power Limited (PS-6, PS-8)
TB2 - 1,2,3 AC Input Input power terminals for 240VAC, 50 to 60 Hz. Non-Power Limited (PS-6E, PS-8E)
TB3 - 1,2 Battery
Backup battery terminals: 24VDC, 7 to 33 Ahrs, Sealed Lead Acid Non-Power Limited.
PS-8 – Two 12VDC 12 Ahrs batteries fit inside the enclosure. Batteries larger than 12
Ahrs require an external enclosure such as the Wheelock Product BATC.
PS-6 – Two 12VDC 7 Ahrs batteries fit inside the enclosure. Batteries larger than 7
Ahrs require an external enclosure such as the Wheelock Product BATC.
JP1 - 1,2 JP1 Jumper Sets Delay for Remote AC LOSS Annunciation.
JP1 IN = 0 Min Delay JP1 OUT = 170 Min Delay
AC Input
120VAC
50 – 60 Hz
(PS-6, PS-8)
AC LOSS Form “C”
Relay Terminals
AC Input
240VAC
50 – 60 Hz
(PS-6E, PS-8E)
Battery Terminals
24VDC, 7 to 33 Ahrs

P84905-001 A Sheet 11 of 36
AC LOSS
TROUBLE
TERMINALS
AC INPUT
TERMINALS
BLACK
WHITE
GREEN
IN1 IN2CC1 CC2 SBUS
IN SBUS
RET SIL
IN
RET1 RET2 COM NC
NO
TROUBLE AUX
OUT NAC1
OUT NAC2 OUT NAC3 OUT NAC4 OUT
TB1 TB2
D37
SW5
TB6
TB3
T B 2
TB1 J2
D35 D34
D21
L
N
NO
COM
NC
ACLOSSTRB
D38
ACPOWER
BATTERY
SW6
D2
D9
D1
D30
D38 D31
D36
D40
D3: GROUND FAULT TROUBLE
GROUNDFAULT
LOCATOR
ACTIVE
GENERALTROUBLE
SILENCE INPUT2
INPUT1
SYNC BUS
IN1 TROUBLE
IN2TROUBLE
POWER
D4-D8: SEE
SW2
SW1
SW4
SW3
TABLE1
D8-D4
<>
D36
GND
X
F1
10AMP
250VAC
F2
10AMP
250VAC
TB3 TB4
24VDC 1AMP
MAXIMUMRESISTIVE LOAD
(NON SUPERVISED)
Figure 7: NAC Extender Wiring

P84905-001 A Sheet 12 of 36
Control PC Board
Refer to Figure 4 for the locations of the terminal described in Table 3.
IN1 IN2
CC1 CC2 SBUS IN SBUS
RET SIL
IN
RET1 RET2 COM NO
NC
TROUBLE AUX
OUT NAC1
OUT NAC2 OUT NAC3 OUT NAC4 OUT
TB1 TB2
TB6 TB3 TB4
SW2
SW1
SW3
SW4
IN2 FOLLOWER OFF/ON
TROUBLELATCH OFF/ON
SBUSIN1/IN2
GF DETECT ON/OFF
SBUSSYNC/TEMPORAL
SYNC PROTOCOL
SYNC PROTOCOL
NAC1-NAC2 CLASS A/B
NAC3-NAC4CLASSA/B
AUX POWERCP/MP
SBUSMASTER/REMOTE
NAC4 SYNC/TEMPORAL
NAC4IN1/IN2
NAC3 IN1/IN2
NAC2 IN1/IN2
NAC1 IN1/IN2
IN1 FOLLOWER OFF/ON
SW6
NAC3 SYNC/TEMPORAL
NAC2 SYNC/TEMPORAL
NAC1 SYNC/TEMPORAL
D30
IN2
D31
D36
INPUT1
INPUT2
D38
SILENCE
D2
GENERALTROUBLE
D37
ACTIVE
SW5
D40
D3: GROUND FAULT TROUBLE
D4-D8: SEE
TABLE9
< D8-D4 >
SYNC BUS
GROUND FAULT
LOCATOR
D9
POWER
D1
IN1TROUBLE
X
Figure 8: Control PC Board
Table 2: Control PC Board Terminal Identification
Terminal Block
Identification
Numbers
Terminal
Identification
Function/Description
TB1-1, 2 IN1+, IN1- These terminals connect to the input voltage source (i.e. 12VDC or 24VDC
FACP). The FACP will supply a voltage from 8-33VDC at 5mA. During the alarm
condition these inputs will cause the designated outputs to drive the notification
appliances (designated outputs are set by output DIP switch banks). During
Stand-by on a FACP, a trouble condition on the designated loop will cause these
inputs to open, providing a trouble condition on the FACP. Alarm condition always
overrides trouble to drive output indicating appliances.
TB1-3, 4, RET1+, RET1- EOLR is connected on these terminals corresponding to IN1+ and IN1-, or the
loop may be continued to other power supplies or appliances before terminating.
TB1-5, 6 CC1+, CC1- Dry contacts are used to actuate the designated outputs. Contacts are normally
closed and actuate the power supply on contact OPEN. Designated outputs
correspond to IN1+, IN1-. NOTE: FACP NAC circuit cannot energize the power
supply by these contacts. When these terminals are not in use, a jumper must be
connected across them.
TB1-7, 8 IN2+, IN2- Same as IN1+, IN1- for corresponding terminals.
TB1-9, 10 RET2+, RET2- Same as RET1+, RET1- for corresponding terminals.
TB1-11, 12 CC2+, CC2- Operates the same as C “Dry2” NC for corresponding terminals. When these
terminals are not in use, a jumper must be connected across them.
TB1-13, 14 S BUS IN+, IN- Synchronizing Bus IN: Links from previous PS-8 (PS-6) “S BUS RET” to
synchronize both together. Controlled as Master or Remote by switch SW3
Position 4. Current Draw is 0.006 Amps per PS-8 (PS-6).
TB1-15, 16 S BUS RET+, RET- Synchronizing Bus RET: Sync control output from the master PS-8 (PS-6) to
additional PS-8 (PS-6) panel “S BUS IN” terminals. Always place 10K Ohm
EOLR on the last panel. Controlled as Master or Remote by switch SW3 Position
4. Up to 40 power supplies can be connected to the PS-8 or 12 to the PS-6.
TB2-1,2 SIL+, SIL- Audible Silence: NAC input to the master PS-8 (PS-6) from FACP. The Audible
signal is transmitted to all PS-8 (PS-6) panels within the loop. Power Limited.
TB2-3,4,5 “NO” “C” “NC”
(COMMON TROUBLE
OUTPUT)
Typically used to trigger remote alerts or other reporting appliances. Form “C”
contacts rated 24VDC at 1 Amp. NOTE: These terminals must be monitored by
the FACP for Class “A” mode.
TB2-6, 7 + AUX OUT - This output has two modes of operation. The CP Mode is capable of 0.02 Amps
for 60 hours (PS-8 only) or 0.24 Amps (PS-8)/0.075 Amps (PS-6) for 24 hours on
battery back up for desired auxiliary equipment. The MP Mode provides up to 2.5
Amps in non-alarm condition or when the input AC is present. Special
Applications, Power Limited.
TB2-8, 9
TB2-10, 11
TB2-12, 13
TB2-14, 15
+OUT1-
+OUT2-
+OUT3-
+OUT4-
NAC appliances are connected to these outputs. Each output can supply a
maximum load of 3.0 Amps, Class "B" or 3.0 Amps Class "A" and can be
individually programmed for Wheelock Strobe Sync Mode, Temporal Mode or
Input follower Mode. The outputs can be configured as four Class "B" circuits,
two Class "A" circuits, or two Class "B" and one Class "A" circuits. Outputs are
controlled by a designated input (INPUT 1 or 2) as selected by the DIP switch for
that output. Power Limited.
TB2-16 Not Used

P84905-001 A Sheet 13 of 36
NOTE: The maximum number of NAC appliances is dependent upon the field wire gauge used and the
total current draw of the Appliances on the NAC circuit.
C. Connect notification appliances to desired outputs OUT1 – OUT4. See Figure 6.
•The POWERPATH has in-out wiring terminals that accept two #18 to #12 American Wire Gauge
(AWG) wires at each screw terminal. Strip leads 3/8 inch and connect to screw terminals.
•Separate all in-out wire runs on supervised circuits to insure integrity of circuit supervision. The polarity
shown in the wiring diagrams and on the circuit boards is for operation of the appliances. The polarity
is reversed by the POWERPATH during supervision.
•Total load for the PS-8 NAC circuits shall not exceed 8.0 Amps. Total load for the PS-6 NAC circuits
shall not exceed 6.0 Amps.
•Total load of any Class “B” output circuit shall not exceed 3.0 Amps.
•Total load of any Class “A” output circuit shall not exceed 3.0 Amps.
D. Terminate unused Class “B” outputs and the last appliance on an output with a 10K Ohm EOLR. Do not
terminate Class “A” outputs with an EOLR, use jumper wires, see Chapter 6.0 on sheet 22 for example
drawings .
E. Connect the indicating circuit(s) from the FACP to the desired input(s), IN1 and IN2. Connect FACP
compatible EOLR’s to RET1 and RET2.
F. In order to use the audible silence feature, connect a 24V or NAC output to the PS-8 (PS-6) SIL input
terminal.
G. If all NAC appliances must activate at the same time, connect “OUT4” from the first PS-8 (PS-6) to the “IN1”
of the second PS-8 (PS-6). Next connect the “IN1 RET” of the second PS-8 (PS-6) to the next PS-8 (PS-6)
“IN1. Connect a 10K EOLR to the “IN1 RET” terminal on the last PS-8 (PS-6).
If NAC appliances must be activated sequentially (not all at the same time) connect the SYNC BUS/SYNC
BUS RET between PS-8 (PS-6).
H. Connect desired auxiliary equipment to the auxiliary output terminals +AUX-. See Sheet 33, Section 8.0,
for the List of Compatible AUX Devices.
•Total load of the AUX output shall not exceed 0.02 Amps during 60 hour battery backup in the Constant
Power (CP) mode, if using standard 12 Ahr batteries.
•Total load of the AUX output shall not exceed 0.24 Amps during 24 hour battery backup in the Constant
Power (CP) mode, if using standard 12 Ahr batteries.
•Total load of the AUX output shall not exceed 0.075 Amps during 24 hour battery backup in the
Constant Power (CP) mode for the PS-6, if using standard 7 Ahr batteries.
•Total load of the AUX output shall not exceed 2.5 Amps in the Managed Power (MP) mode.
I. Connect system trouble relay terminals as desired.

P84905-001 A Sheet 14 of 36
3.0 SETTING THE DIP SWITCHES
3.1 CONTROL PC BOARD
Refer to Figure 9 for the location and setting of the DIP switches on the Control PC board.
1. Set NAC output DIP Switch(s) on SW1 to follow corresponding input (IN1, IN2).
2. See Figure 8 for DIP switch locations and Table 3 for DIP Switch Selection and DIP Switch Settings
SW5
SW2
SW1
SW3
SW4
IN2 FOLLOWER OFF/ON
TROUBLE LATCH OFF/ON
SBUSIN1/IN2
GF DETECT ON/OFF
SBUSSYNC/TEMPORAL
SYNCPROTOCOL
SYNCPROTOCOL
NAC1-NAC2 CLASSA/B
NAC3-NAC4 CLASSA/B
AUX POWERCP/MP
SBUSMASTER/REMOTE
NAC4 SYNC/TEMPORAL
NAC4IN1/IN2
NAC3 IN1/IN2
NAC2 IN1/IN2
NAC1 IN1/IN2
IN1 FOLLOWER OFF/ON
SW6
NAC3 SYNC/TEMPORAL
NAC2 SYNC/TEMPORAL
NAC1 SYNC/TEMPORAL GROUND FAULTTEST
LOCATOR SWITCH
Figure 9: Control PC Board DIP Switches
Table 3: Control PC Board DIP Switch Settings
DIP
Switch
Function
Description
OFF or “0” ON or “1” Used in MASTER
Mode
Used in
REMOTE
Mode
SW6
Position 1 TROUBLE LATCH
OFF/ON Trouble conditions clear automatically as condition is
repaired.
Trouble indicators latch ON until
this switch is switched to the
disable position or all power is
removed from the panel.
X X
Position 2 SBUS IN1/IN2 If the SYNC BUS detects a
trouble condition, it will break the
IN1_RET connection.
If the SYNC BUS detects a trouble
condition, it will break the IN2_RET
connection.
X
Position 3 IN2 FOLLOWER
OFF/ON NAC Output(s) or SBUS set to trigger on IN2 or CC2 will
generate signals according to its
SYNC/TEMPORAL switch setting.
NOTE: This switch is ONLY used
in the SBUS MASTER mode.
NAC Output(s) or SBUS set to
trigger on IN2 or CC2 turn on when
IN2 or CC2 is “Active” and supplies
NAC reverse supervision voltage
when IN2 or CC2 is “Not Active”
X X
Position 4 IN1 FOLLOWER
OFF/ON NAC Output(s) or SBUS set to trigger on IN1 or CC1 will
generate signals according to its
SYNC/TEMPORAL switch setting.
NAC Output(s) or SBUS set to
trigger on IN1 or CC1 is “Active”
and supplies NAC reverse
supervision voltage when IN1 or
CC1 is “Not Active”
X X

P84905-001 A Sheet 15 of 36
SW2 Sync Select
Position 1 NAC4
SYNC/TEMPORAL Sets Sync pattern on NAC4 Sets CODE 3 Temporal Pattern on NAC4
X X
Position 2 NAC3
SYNC/TEMPORAL Sets Sync pattern on NAC3 Sets CODE 3 Temporal Pattern on NAC3
X X
Position 3 NAC2
SYNC/TEMPORAL Sets Sync pattern on NAC2 Sets CODE 3 Temporal Pattern on NAC2
X X
Position 4 NAC1
SYNC/TEMPORAL Sets Sync pattern on NAC1 Sets CODE 3 Temporal Pattern on NAC1
X X
SW1
Position 1 NAC4 IN1/IN2 Input 1 (IN1or CC1) triggers
NAC4. Any trouble condition on
NAC1 will cause an open
condition on IN1_RET.
Input 2 (IN2 or CC2) triggers NAC4.
Any trouble condition on NAC1 will
cause an open condition on
IN2_RET.
X X
Position 2 NAC3 IN1/IN2 Input 1 (IN1or CC1) triggers
NAC3. Any trouble condition on
NAC2 will cause an open
condition on IN1_RET.
Input 2 (IN2 or CC2) triggers NAC3.
Any trouble condition on NAC2 will
cause an open condition on
IN2_RET.
X X
Position 3 NAC2 IN1/IN2 Input 1 (IN1or CC1) triggers
NAC2. Any trouble condition on
NAC1 will cause an open
condition on IN1_RET.
Input 2 (IN2 or CC2) triggers NAC2.
Any trouble condition on NAC3 will
cause an open condition on
IN2_RET.
X X
Position 4 NAC1 IN1/IN2 Input 1 (IN1or CC1) triggers
NAC1. Any trouble condition on
NAC1 will cause an open
condition on IN1_RET.
Input 2 (IN2 or CC2) triggers NAC1.
Any trouble condition on NAC4 will
cause an open condition on
IN2_RET.
X X
SW4
Position 1 SYNC PROTOCOL Wheelock Sync Only – Leave in
this position. For Future Use
X X
Position 2 SYNC PROTOCOL Wheelock Sync Only – Leave in
this position. For Future Use
X X
Position 3 SBUS
SYNC/TEMPORAL In MASTER Mode SBUS Terminals Output SYNC
In REMOTE Mode Set this switch
to same setting as MASTER PS-8
(PS-6).
In MASTER Mode SBUS Terminals
Out TEMPORAL
In REMOTE Mode Set this switch
to same setting as MASTER PS-8
(PS-6).
X X
Position 4 SBUS
MASTER/REMOTE
Sets the NAC Extender to
“MASTER MODE” Sets the NAC Extender to “REMOTE MODE”
X X
SW3
Position 1 GF DETECT
ON/OFF Ground Fault Detect -ON Ground Fault Detect – OFF Clear Ground Fault test results
X X
Position 2 AUX POWER
CP/MP Constant Power (CP) – Provides Auxiliary power in alarm and on
battery backup.
Managed Power (MP) – Power is
off in alarm and when there is a
loss of AC.
X X
Position 3 NAC3-NAC4
CLASS A/B NAC3-NAC4 CLASS A NAC3-NAC4 CLASS B
X X
Position 4 NAC1-NAC2
CLASS A/B NAC1-NAC2 CLASS A NAC1-NAC2 CLASS B
X X
EXAMPLE – Basic Settings on the Control PC Board
For a 4 NAC, Class B circuit output controlled by Input 1 (IN1), Wheelock Sync, Auxiliary power in the Constant Power
mode(CP), and Ground Fault detection, set the switches as follows:
SW2 Positions 1 - 4 Left
SW1 Positions 1 – 4 Left
SW3 Positions 1 – 2
Positions 3 - 4 Left Right
SW4 Positions 1 – 4 Left
SW6 Position 1 – 4 Left

P84905-001 A Sheet 16 of 36
4.0 Applying Power to the Power Supply Panel
Now that all the Wiring is complete and the switch settings have been made, it’s time to apply power to the Power Supply
panel.
ALWAYS APPLY AC POWER BEFORE APPLYING BATTERY POWER. ALWAYS
REMOVE BATTERY POWER BEFORE REMOVING AC POWER. FAILURE TO DO SO
CAN CAUSE DAMAGE TO THE POWER SUPPLY COMPONENTS.
1. Connect AC source. The AC source shall be connected to a dedicated, non-switch power source. The AC must
first be wired into the buildings main electrical power. The conduit entry can be either from the top or left side
using the knock-outs. See Figure 8. Connect Earth Ground First.
TB2
L
N
GND
Figure 10:
AC Power Terminals on the Power Supply PC Board
2. Connect backup batteries. Batteries shall be Sealed Lead Acid type. Observe correct polarity and voltage. Use
two of the same size batteries connected in series as shown in Figure 9. Use up to 33 Ahr batteries depending
on circuit loading, BATTERY CALCULATION SHEET is provided on pages 20 and 21.
NOTE: The PS-8 enclosure can accommodate two 12VDC batteries up to 12 Ahr in size. Batteries larger than 12 Ahr
must be stored in a separate battery enclosure such as the Wheelock BATC Battery Enclosure.
The PS-6 enclosure can accommodate two 12VDC batteries up to 7 Ahr in size. Batteries larger than 7 Ahr
must be stored in a separate battery enclosure such as the Wheelock BATC Battery Enclosure.
Figure 11: Batteries Connected in Series
TWO DIFFERENT SOURCES OF POWER MAY BE CONNECTED TO THIS PANEL.
DISCONNECT BOTH SOURCES OF POWER BEFORE SERVICING. FAILURE TO
DISCONNECT BOTH SOURCES OF POWER BEFORE SERVICING COULD RESULT
IN PROPERTY DAMAGE, SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.

P84905-001 A Sheet 17 of 36
BATTERY MAINTENANCE
Battery Replacement: Replace with new batteries every four (4) years or as needed if battery will no longer accept full
charge. Two 12V batteries are required for 24VDC.
The Power supply is now operational. Table 5 is a list of the LED indicators on the Power Supply/Battery Charger PC
board. Table 6 is a list of the LED indicators on the Control PC board. Amber LED indicators always indicate a trouble
condition. If amber LED indicator(s) light turn to the troubleshooting section for resolution.
Table 4: Power Supply/Battery Charger PC Board LED Identification
LED
Designator
Identification LED
Color
Description
D38 AC Power Green Indicates when AC power is applied to the PC board.
D24 Battery Power Green Indicates when battery power is applied to the PC board.
D34 Battery Trouble Amber Indicates that a trouble condition exists on the battery circuit.
D35 Battery Charger
Trouble Amber Indicates that the battery charger section is not working.
D36 Processor Trouble Amber Indicates that a trouble condition exists on the processor circuit.
D21 AC Loss Amber Indicates a brown out or total loss of AC power.
Table 5: Control PC Board LED Identification
LED
Designator
Identification LED
Color
Description
D9 Power Green Indicates when power is applied to the Control board.
D37 Active Red Indicates when the power supply is activated and supplying power to the NAC
output circuits.
D2 System Trouble Amber Indicates that a general trouble condition exists on the Control board.
D8, D7, D6,
D5, D4 Coded Trouble LEDs Amber These five LEDs light in a coded pattern indicating the location and type of trouble condition. If multiple troubles are present the LEDs will indicate the highest priority
trouble. When repaired the LEDs will indicate the next priority trouble.
D3 General Ground
Fault Amber Indicates that a ground fault condition exists. Pressing switch SW5 will cause the code pattern on the coded Trouble LEDs to locate the location.
D1, D30 IN1 RET, IN2
RET Trouble Amber Indicates that a general trouble condition exists, and the IN1 RET and IN2 RET relays are open.
D40 SYNC BUS
Power Active Green This LED lights when 24V is present on the SYNC BUS.
D31 IN1/CC1 Active Red This LED lights when IN1 or CC1 has been activated.
D36 IN2/CC2 Active Red This LED lights when IN2 or CC2 has been activated.
D38 Silence Active Red This LED turns on when the “SILENCE” feature has been activated.
5.0 TROUBLESHOOTING:
THE PS-8 POWERPATH CONTAINS VOLTAGES THAT CAN CAUSE DEATH OR SERIOUS
INJURY. ALWAYS OBSERVE PROPER ELECTRICAL SAFETY PRECAUTIONS AND
WARNINGS.
Always follow good troubleshooting procedures:
•When trouble occurs, observe all visual indications and note them Refer to the interior door label.
•If the problem is obvious or it can be located on the Troubleshooting Table, note it. Refer to the interior door label.
•Always de-energize the POWERPATH completely (Remove both AC and DC power) before repairs.
•While the POWERPATH is de-energized, perform a visual and hands on check of all terminals and wires to ensure
proper termination.
•If intermittent troubles occur, use the trouble latch (SW2 Position 4) to find it.

P84905-001 A Sheet 18 of 36
Troubleshooting Using the LED Indicators
Power Supply/Battery Charger PC Board.
TB3
J2
BATTERY
TB1
TB2
N
L
GND
NC
COM
NO
D36 D35 D34
BATTERYTROUBLE
BATTERY CHARGERTROUBLE
MICROPROCESSORTROUBLE
D21
D38
AC POWER
AC LOSSTRB
D24
BATTERY
POWER
JP1
Figure 12: Power Supply/Battery Charger PC Board Trouble LED Locations
Table 6: Power Supply/Battery Charger PC Board LED Trouble Indicators
LED
Designator
Identification LED
Color
Description Action
D38 AC Power Green Indicates when AC power is applied to the
PC board. No Action Required
D24 Battery Power Green Indicates when battery power is applied to
the PC board. No Action Required
D34 Battery Trouble Amber Indicates that a trouble condition exists on
the battery circuit. Check the battery wiring and terminal connections. Replace the batteries.
D35 Battery Charger
Trouble Amber Indicates that the battery charger section is not working.
Remove the batteries from the
terminals. Using a DC voltmeter
check the voltage across the
terminals. The voltage should be
26.5VDC or higher. If the voltage is
not present, the battery charger
section has failed. Replace the PC
Board. If the voltage is present,
replace the batteries.
D36 Processor
Trouble Amber Indicates that a trouble condition exists on the processor circuit.
Disconnect DC and AC voltages
from the power supply PC board.
Wait 10 seconds and reconnect. If
the problem does not clear, replace
the PC board.
D21 AC Loss Amber Indicates a brown out or total loss of AC
power.
Check AC Mains is properly
connected. Check branch circuit
breaker powering the PS6/8. Check
the AC Mains Fuse, F1.

P84905-001 A Sheet 19 of 36
Control PC Board
IN1 IN2
CC1 CC2 SBUS IN SBUS
RET SIL
IN
RET1 RET2 COM NO
NC
TROUBLE AUX
OUT NAC1
OUT NAC2
OUT NAC3 OUT NAC4 OUT
TB1 TB2
TB6 TB3 TB4
SW2
SW1
SW3
SW4
IN2 FOLLOWER OFF/ON
TROUBLE LATCH OFF/ON
SBUS IN1/IN2
GF DETECT OFF/ON
SBUS SYNC/TEMPORAL
SYNCPROTOCOL
SYNCPROTOCOL
NAC1-NAC2 CLASSA/B
NAC3-NAC4 CLASSA/B
AUX POWER CP/MP
SBUSMASTER/REMOTE
NAC4SYNC/TEMPORAL
NAC4 IN1/IN2
NAC3 IN1/IN2
NAC2 IN1/IN2
NAC1 IN1/IN2
IN1 FOLLOWER OFF/ON
SW6
NAC3 SYNC/TEMPORAL
NAC2 SYNC/TEMPORAL
NAC1 SYNC/TEMPORAL
D9
POWER
D37
ACTIVE
SW5
D40
D3: GROUND FAULTTROUBLE
D4-D8: SEE
TABLE 9
< D8-D4>
SYNCBUS
GROUNDFAULT
LOCATOR
SWITCH
D1
IN1TROUBLE
D31
D36
INPUT1
INPUT2
D38
SILENCE
D2
GENERALTROUBLE
D30
IN2TROUBLE
Figure 13: Control PC Board Trouble LED Locations
Table 7: Control PC Board LED Trouble Indicators
LED
Designator
Identification LED
Color
Description Action
D9 Power Green Indicates when power is applied to the Control
board. No Action Required
D37 Active Red Indicates when the power supply is activated
and supplying power to the NAC output
circuits. No Action Required
D2 System Trouble Amber Indicates that a general trouble condition exists
on the Control board.
Check the Coded Trouble LED
Indicators and the Ground Fault LED.
Repair any problems indicated. If no
indication is observed, replace the
Control PC Board. See Table 9
D8, D7, D6,
D5, D4 Coded Trouble LED Indicators Amber
These five LEDs light in a coded pattern
indicating the location and type of trouble
condition. If multiple troubles are present the
LEDs will indicate the highest priority trouble.
When repaired the LEDs will indicate the next
priority trouble.
See Table 9
D3 General Ground
Fault Amber
Indicates that a ground fault condition exists.
Pressing switch SW5 will cause the code
pattern on the coded Trouble LEDs to locate
the location.
See Table 9
D1, D30 IN1 RET, IN2
RET Trouble Amber Indicates that a general trouble condition
exists, and the IN1 RET and IN2 RET relays
are open.
See Table 9
D40 SYNC BUS
Power Active Green This LED lights when 24V is present on the SYNC BUS. See Table 9
D31 IN1/CC1 Active Red This LED lights when IN1 or CC1 has been
activated.
See Table 9
D36 IN2/CC2 Active Red This LED lights when IN2 or CC2 has been
activated.
See Table 9
D38 Silence Active Red This LED turns on when the “SILENCE” feature
has been activated. See Table 9
Coded Trouble LEDs
D8, D7, D6, D5, D4

P84905-001 A Sheet 20 of 36
Trouble Condition Priority Identification
When multiple troubles exist the Control PC board Coded Trouble LED Indicators indicate the highest priority trouble.
Table 8 shows the priority sequence. When the highest priority is repaired, the next highest priority will automatically be
displayed. Table 8 lists the coded condition of these 5 LED indicators and the action required.
Table 8: Control PC Board Trouble Priority Identification
Location Priority Location Displayed Priority
1. NAC 1
2. NAC 2
3. NAC 3
4. NAC 4
5. AUX
6. CC1
7. CC2
8. SYNC BUS
1. CURRENT LIMIT
2. SHORT
3. OPEN
4. GROUND FAULT
Table 9: Control PC Board Coded Trouble Identification
Coded Trouble LED’s
“□” = OFF, “■” = ON Action
D8 D7 D6 D5 D4 D3
Trouble
Locator
Trouble
Condition
□□□□□□No Fault No Fault No Action Required.
□□□□□■Ground Fault Ground Fault Shut off AC Mains Power to unit.
Open cabinet door. Press and hold SW5, Ground Fault Locator
Switch for 5 seconds. Release switch.
□□□□■□NAC Output 1 Short Check for a wiring short. Check for a shorted or improperly
wired NAC Appliance. (If an appliance is wired + to – and – to +
a short trouble will be indicated.
□□□■□□NAC Output 1 Open Check OUT1 terminals for good connections. Check NAC
circuit wiring for continuity. Check NAC circuit for 10K Ohm
EOLR.
□□□■■□NAC Output 1 Current Limit Reduce the number of NAC Appliances on Output1.
□□■□□□NAC Output 2 Short Check for a wiring short. Check for a shorted or improperly
wired NAC Appliance. (If an appliance is wired + to – and – to +
a short trouble will be indicated.
□□■□■□NAC Output 2 Open Check OUT2 terminals for good connections. Check NAC circuit
wiring for continuity. Check NAC circuit for 10K Ohm EOLR.
□□■■□□NAC Output 2 Current Limit Reduce the number of NAC Appliances on Output1.
□□■■■□NAC Output 3 Short Check for a wiring short. Check for a shorted or improperly
wired NAC Appliance. (If an appliance is wired + to – and – to +
a short trouble will be indicated.
□■□□□□NAC Output 3 Open Check OUT3 terminals for good connections. Check NAC
circuit wiring for continuity. Check NAC circuit for 10K Ohm
EOLR.
□■□□■□NAC Output 3 Current Limit Reduce the number of NAC Appliances on Output1.
□■□■□□NAC Output 4 Short Check for a wiring short. Check for a shorted or improperly
wired NAC Appliance. (If an appliance is wired + to – and – to +
a short trouble will be indicated.
□■□■■□NAC Output 4 Open Check OUT4terminals for good connections. Check NAC circuit
wiring for continuity. Check NAC circuit for 10K Ohm EOLR.
□■■□□□NAC Output 4 Current Limit Reduce the number of NAC Appliances on Output1.