wheelock PS-24-8MC INSTALLATION INSTRUCTIONS

POWERPATH

PS-24-8MC

POWER BOOSTER

POWER SUPPLY

Installation Instructions

273 Branchport Avenue, Long Branch, NJ 07740-6899 Ph: [phone] Fax: [phone]
Web Site:

Copyright 2007 Cooper Wheelock, Inc. All rights reserved

www.cooperwheelock.com e-mail: [e-mail]

Thank you for using our products.

Use this product according to this instruction manual.

Please keep this instruction manual for future reference.

A84661-001A

TABLE OF CONTENTS

1.0 INTRODUCTION AND SPECIFICATIONS: 3

1.1 INTRODUCTION 3

1.2 SPECIFICATIONS 4

1.3 TERMINOLOGY 4

1.4 TERMINAL IDENTIFICATION 5

1.5 LED STATUS 7

1.6 BATTERY MAINTENANCE 7

2.0 INSTALLATION INSTRUCTIONS: 7

2.1 UNPACKING 7

2.2 MOUNTING 7

2.3 WIRING 9

2.4 TROUBLE RELAY STATUS CONNECTIONS 10

2.4.1 AC LOSS TROUBLE TERMINALS 10

2.4.2 COMMON TROUBLE TERMINALS 10

3.0 OPERATION: 12

3.1 MODES OF OPERATION 12

3.2 DIP SWITCH SETTINGS 12

3.3 CLASS “B” OPERATION 13

3.4 CLASS “A” OPERATION WITHOUT OPTIONAL PS-4CA MODULE 16

3.5 CLASS “A” OPERATION WITH OPTIONAL PS-4CA MODULE 20

3.6 MASTER REMOTE OPERATION 24

4.0 TROUBLESHOOTING: 26

5.0 BATTERY CALCULATION SHEET: 27

6.0 WARRANTY STATEMENT: 28

COOPER WHEELOCK INC. COMPATIBLE APPLIANCES: Appendix A

LIST OF FIGURES

Figure 1: Terminal Locations 6
Figure 2: Mounting Dimensions 8
Figure 3: POWERPATH PS-24-8MC 11
Figure 4: Output DIP Switch(s) 12

LIST OF TABLES

Table 1: Terminal Identification 5
Table 2: LED Status Description 7
Table 3: DIP Switch Selection 10
Table 4: Troubleshooting 26

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NOTE: All CAUTIONS and WARNINGS are identified by the symbol
letters.

WARNING: 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.

. All WARNINGS are printed in bold capital

1.0 INTRODUCTION AND SPECIFICATIONS:

1.1 INTRODUCTION

The PS-24-8MC POWERPATH 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-24-8MC may be connected to any 12V or 24V (FWR or DC) Fire Alarm Control Panel (FACP)
by using a Notification Appliance Circuit (NAC) or a “Dry Contact”. 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. With the optional plug-in PS-4CA module 101648 the unit supports (4) Class “A”
Notification Appliance Circuits. Additionally, an auxiliary power output of 3.5 Amps (disconnected upon AC
power loss or an alarm condition) or 200 mAmps (constant) is provided, which can be manually reset. The PS­24-8MC also contains a battery charger capable of charging up to 20 Amp/Hour (AH) of battery backup.
Batteries larger than 12 AH will not fit inside cabinet, use of an external battery cabinet is necessary.

Two FACP NAC circuits or two “Dry” contact initiating circuits can be connected to the POWERPATH inputs.
These inputs can then be directed to control supervision and power delivery to any combination of the four (4)
outputs.

Each output is rated at 3.0 Amps (Class "B") or (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-24-8MC NAC circuits shall not exceed 8.0 Amps.

The PS-24-8MC under non-alarmed 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 POWERPATH steered input
(IN1 or IN2). In addition there are two sets of trouble reporting terminals, one used for AC power loss reporting
and the other for all troubles. The AC power loss reporting, on the common trouble terminals, can be delayed
for either 30 seconds or 170 minutes. The AC power loss terminals will always report the trouble, 30 seconds
after loss of AC power.

Wheelock horns/strobes, strobes and horns with synchronizing capability can be utilized with the PS-24-8MC.
Audibles can be silenced with only two wires. Additionally, the POWERPATH can provide a temporal coded
signal for appliances that can utilize it.

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1.2 SPECIFICATIONS

Approvals:

• UL Listed 864 Standard for Control Units for Fire Protective Signaling Systems

• Pending: FM

• Pending: MEA approved – NYC Dept. of Buildings

• Pending: California State Fire Marshall (CSFM) approved

• Pending: Fire Protection Bureau (FPB) Chicago

• NFPA 72 compliant

Inputs:

• 120VAC, 50/60Hz, 5.0 Amps Operating Power in Alarm

• 24VDC Battery Backup Connection

• Two (2), 12V or 24V NAC Initiating Circuits (8-33V at 7mA) FWR or DC

• Two (2) “Dry” Contact initiating Circuits

• Accepts two (2) Class “A” or two (2) Class “B” circuit inputs

• Built in battery charger for sealed lead acid or gel type batteries up to a 20 AH.

Batteries larger than 12 AH will not fit inside cabinet, use of an external battery cabinet is necessary.
Outputs:

• NAC outputs are 24VDC, 3.0 Amps each, power limited

• 8 Amps total alarm current for the unit

• Capable of four (4), Class "B" circuits

• Capable of two (2) Class “A” circuits

• Capable of four (4) Class “A” circuits (with optional PS-4CA module)

• Capable of one (1) Class “A” circuit and two (2) Class “B” circuits

• 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>OUT SYNC” mode (SM, DSM or 2

required)

• Audible silence capability

• Filtered and electronically regulated output

• 3.5 Amp auxiliary power limited output with reset capability. (Removed upon AC loss or alarm. Automatic

reset 30 seconds after AC power returns or the alarm condition is over) or 200 mAmps auxiliary power
limited output which remains on during AC loss or an alarm condition.

Supervision:

• Compatible with 12V or 24V (FWR or DC) FACP

• Signaling appliance loops are supervised and steered to either IN1 or IN2

• 2.2K Ohm, 1 Watt (Wheelock Model #MPEOL) End of Line Resistor (EOLR) for supervision of all outputs

• AC loss trouble reported over a separate set of contacts (delay of either 30 seconds)

• All troubles are reported over the common trouble contacts (AC loss can have a delay of 30 seconds or

170 minutes)

• Automatic switchover to standby battery when AC fails

• Thermal and short circuit protection with auto reset

• Input and output status LED indicators

• AC fail supervision

• Battery presence and low battery supervision

• Ground Fault Detection (60K ohms)

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
AH = Ampere/Hour

nd

PS-24-8MC is

SM = Wheelock Sync Module with single output.
DSM = Wheelock Dual Sync Module with two outputs.
C = Common
NC = Normally Closed
NO = Normally Open

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1.4 TERMINAL IDENTIFICATION

Terminal Block

Identification

Numbers (Figure 1)

TB1-1-3
TB5-1, 2
TB7-1, 2

TB7-3, 4

TB8-1, 2
TB8-5, 4
TB7-5, 6

TB8-5, 6

TB6-1, 2
TB6-3, 4
TB6-5, 6
TB6-7, 8

TB4-1-3

TB2-1-3

TB9-1, 2

Table 1: Terminal Identification

Terminal

Identification

N,G,L AC power input terminals 120VAC, 50-60Hz.

+ BAT - 24VDC Battery connection.

IN1+,IN1- These terminals connect to the input voltage source (i.e. 12VDC or

24VDC FACP). The FACP will supply a voltage from 8-33V (FWR or DC)
at 7mA. 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 the PS-24-8MC can report
troubles from the designated loop by opening the FACP’s initiation loop.
During an alarm condition the PS-24-8MC closes the loop to ensure that
the alarm condition will be passed through to the next device on the loop.

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.

IN2+, IN2- Same as IN1+, IN1- for corresponding terminals.

RET2+, RET2- Same as RET1+, RET1- for corresponding terminals.

C “DRY1” NC 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: Wiring must remain
in the same room in conduit. NOTE: FACP NAC circuit cannot energize
the power supply by these contacts. NOTE: When these terminals are
not in use, a jumper must be connected across them.

C “DRY2” NC Operates the same as IN2+,IN2- for corresponding terminals. When

these terminals are not in use, a jumper must be connected across them.
NOTE: Wiring must remain in the same room in conduit.

+OUT1­+OUT2­+OUT3­+OUT4-

“NO” “C” “NC”

(COMMON

TROUBLE

OUTPUT)

“NO” “C” “NC”

(AC LOSS
TROUBLE

OUTPUT)

+ AUX - AUX output is rated 20.1 to 28VDC, special applications. (See Appendix

Indicating appliances are connected to these outputs (See Examples in
Operation Section). Each output can supply a maximum load of 3.0
Amps Class "B" or Class "A" and can be individually programmed for
Normal Mode, Temporal Mode, IN>OUT SYNC Mode, or WHEELOCK
SYNC Mode. The outputs can be configured as four Class "B" circuits,
two Class "A" circuits, or two Class "B" and one Class "A" circuits. With
the optional PS-4CA module 101648 the unit can provide four Class “A”
circuits. Outputs are controlled by a designated input (INPUT 1 or 2) as
selected by the DIP switch for that output. NOTE: When the panel has
been set to synchronization mode, IN1 is used for strobe activation and
IN2 is used for audible silence. Individual output control is disabled.
Typically used to trigger remote alerts or other reporting appliances.
Form C contacts rated 28VDC at 1 Amp. Resistive

Used for local reporting of AC power loss to trigger remote alerts or other
reporting appliances. Form C contacts rated 28VDC at 1 Amp. Resistive

A for suitable devices). In MP mode: AUX output is capable of 3.5Amps,
and can be reset by a momentary switch on the board. The 3.5 Amps of
power is disconnected when AC power is lost or the unit is in alarm. The

3.5 Amps of power is reconnected 30 seconds after AC power returns or
the alarm condition is over. In CP mode: The AUX output is capable of
200mAmps with 12AH battery or 70mAmps with 7AH battery. In CP
mode, power is available during AC power loss (batteries connected) and
during an alarm condition.

Function/Description

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ASSEMBLED IN USA WITH PRIDE

TB2

TB4

TB7

Figure 1: Terminal Locations

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1.5 LED STATUS

Table 2 lists status of the LED indicators. The ALARM condition occurs when the input causes the output
circuits to energize. The TROUBLE LED’s for OUT1, OUT2, OUT3, OUT4 and, GND FAULT latch ON when
the trouble occurs. They are turned OFF when an alarm condition occurs or the PS-24-8MC system reset
switch (SW5) is pressed. The GND FAULT, BATT and, MICRO FAULT LED’s turn ON when the trouble
occurs. The trouble relays (AC loss and Common trouble) follow the trouble condition and are non-latching.

NOTE: An alarm condition overrides a trouble condition.

Table 2: LED Status Description

LED OFF ON ON

OUT1 STANDBY -------- TROUBLE
OUT2 STANDBY -------- TROUBLE
OUT3 STANDBY -------- TROUBLE
OUT4 STANDBY -------- TROUBLE
INP1 STANDBY ALARM TROUBLE*
INP2 STANDBY ALARM TROUBLE*
GND FAULT -------- TROUBLE -------­AC No AC AC Present -------­BATT -------- TROUBLE -------­MICRO FAULT -------- TROUBLE -------­POWER SUPPLY DC TROUBLE DC PRESENT --------

• NOTE: If INP1 or INP2 LED and OUT1-OUT4 TROUBLE LED are on, TROUBLE exists currently.

1.6 BATTERY MAINTENANCE

Replace batteries every four (4) years or as needed if battery will no longer accept full charge, two 12V
batteries are required. Battery capacity must be in accordance with the proper battery calculation for the
application using

BATTERY CALCULATION SHEET provided on page 27.

NOTE: Battery compartment measures 4.50" High 12.50" Wide 5.00" Deep.

2.0 INSTALLATION INSTRUCTIONS:

NOTE: The PS-24-8MC POWERPATH 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 board is securely mounted to the rear of
the enclosure.

2.2 MOUNTING WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT

TO RAIN OR MOISTURE.

CAUTION: 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).
The POWERPATH unit is to be mounted in an indoor, dry location using the mounting dimensions in Figure

2.
Mount the panel in a location that does not exceed a temperature range of 0 C to 49 C (32 F to 120 F)

and a humidity equal to 10% to 93% at 30 C (86 F) non-condensing.
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.

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5.00"

7.452"

Figure 2: Mounting Dimensions

DIMENSIONS (H x W x D) - 16.70” x 12.83” x 5.00”

NOTE: All dimensions shown are in inches

CAUTION: Use care when punching out knock-outs to avoid damage to internal components.

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2.3 WIRING WARNING: MAKE SURE THAT THE TOTAL RMS CURRENT REQUIRED BY ALL APPLIANCES

THAT ARE CONNECTED TO THE PS-24-8MC’s NOTIFICATION APPLIANCE CIRCUITS DOES NOT
EXCEED THE PS-24-8MC’s RATED CAPACITY (8 AMPS MAXIMUM) OR THE CURRENT RATINGS OF
ANY INDIVIDUAL NOTIFICATION APPLIANCE CIRCUIT (3 AMPS MAXIMUM). OVERLOADING THE
PS-24-8MC COULD RESULT IN LOSS OF POWER AND FAILURE TO ALERT OCCUPANTS DURING
AN EMERGENCY, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR
DEATH TO YOU AND/OR OTHERS.

Review the Operation Section (3.0) in order to select the proper hook-up and use of the POWERPATH. Set
switches and wire the POWERPATH as follows: Terminal and switch locations are shown in Figure 1.

A. Set output DIP Switch(s) to follow corresponding input (IN1, IN2) and desired output mode. See Table

3 DIP Switch Selection and DIP Switch Settings Section (3.2).

B. Set DIP Switch SW7 position 1 & 2 to select Class “A” or Class “B” operation (Off for Class "B", On for

Class "A").

Note: When the PS-24-8MC is used with the optional PS-4CA module, the main board Class switches

must be set to Class “B”.

C. Select the mode of operation for the Auxiliary output (JP2) to either managed power (MP) or constant

power (CP). In the MP mode of operation the Auxiliary output is disconnected upon AC loss or an
alarm condition. The power is reconnected 30 seconds after AC power returns or the alarm condition
is over. The power is not disconnected when in the CP mode of operation.

D. Select the delay, before AC loss trouble will be reported to the common trouble terminals (JP1) to

either SHORT DLY or LONG DLY. LONG DLY is 170 minutes and SHORT DLY is 30 seconds.
E. If using the optional PS-4CA module install it now.
F. Dress the battery wires down to the back of the enclosure, observing ¼” separation of power limited

wire V.S. non-power limited wiring. See Figure 3.
G. Connect notification appliances to desired outputs OUT1 – OUT4 See Operation Section (3.0).

• 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 inches and connect to screw terminals.
Maximum line impedance is 39 ohms or 3.4 volt drop, whichever is more.

• 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 FACP during supervision.

• Total load for the PS-24-8MC NAC circuits shall not exceed 8.0 Amps.

• Total load of any NAC output circuit shall not exceed 3.0 Amps.

• In Class “B” mode of operation terminate unused outputs with a 2.2K Ohm EOLR.

• In Class “A” mode of operation connect unused outputs to there respective returns.

• When using the optional PS-4CA module connect unused outputs to there respective returns.

H. Connect the NAC circuit(s) from the FACP to the desired input(s), IN1 and IN2. Connect EOLR to

RET1 and RET2. The value is determined by FACP manufacture.
I. Connect desired auxiliary equipment to the auxiliary output terminals +AUX-.
J. Connect AC loss trouble relay as desired.
K. Connect the common trouble relay as desired.
L. 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 hand side using the knock-outs. See Figure 3. Connect Earth Ground First.
M. Connect backup batteries. Observe correct polarity, use two of the same connected in series. Use

either a 7AH or a 12AH battery depending on circuit loading,

BATTERY CALCULATION SHEET is

provided on Sheet 27.
N. Install battery cover between both battery wires and Power Limited Wiring. See Figure 3.
O. Press Auxiliary Power Reset, SW6 to ensure that Auxiliary Power is present.
P. Close door and lock.

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