Potter PSN-106 Power Supply User Manual

Potter PSN-106 Power Supply

General Description

The Potter PSN series of power supplies is designed to provide the power and flexibility needed for the most demanding fire
system installations. The PSN-106 is a 10-Amp 24Vdc switch-mode power supply design, which is up to 50% more efficient than linear-mode supplies. The PSN series is your best choice for powering fire system notification appliances and accessories. New and retrofit construction requirements for ADA compliance are easily accomplished with ample power for additional notification appliances, along with the ability to synchronize the notification appliances using built-in sync generation for Potter, System Sensor ®, Gentex®, and Wheelock ® notification appliances. The PSN series goes even further to make retrofits easier with the advanced QuadraSync feature, which allows notification appliances from different manufacturers to sync with each other. You also have the option to monitor an existing circuit by placing a reference resistor of the same value on the power supply and continuing to monitor the circuit without changing the field EOL.

System Features

• Input voltage: 120/240VAC 50/60Hz
• Output voltage 24VDC @ 10A
• Six class “B” Style “Y” notification circuits on the PSN-106
  • Rated at 3 amps max each
  • Can be configured as up to three class “A” Style “Z” notification circuits
• Supervised Battery Charger: 27.3 @ 1A (supports 7-55 Ah batteries)
• Integrated battery cut-off circuitry to protect batteries from deep discharge
• Two Trouble Relays (5A at 30VDC)
  • General System Trouble (programmable for AC delay via dip-switch)
  • Low AC Trouble
• Diagnostic LED’s
  • Status LEDs for Active NAC and NAC trouble conditions
  • Status LEDs for Earth Fault (Amber), AC (Green), Battery Fault (Amber)
  • Trouble Memory feature captures troubles that have previously been restored.
• Synchronized notification appliance circuits
  • Potter
  • Wheelock®
  • Gentex®
  • System Sensor®
• Configurable output circuits (D.I.P. switch sets options for each circuit)
  • ANSI temporal-coded
  • Constant Power
  • Door-Holder Power
• Separate DC Power Output (3A)
• Two Trigger Inputs (Class A, Style Z or Class B, Style Y)
• Reference EOL terminals, allows 2K – 27K EOL value to be used
• QuadraSync panel-wide synchronization of the same or multiple brands.
• PassThru mode copies input signals to output (can be used in conjunction with QuadraSync

Mounting Instructions

The standard mounting is a surface mount cabinet. The unit must be securely attached to a permanent partition using suitable fasteners. Five mounting holes are provided to accept ¼ inch diameter screws maximum. There are seven knockouts provided.

Operating Instructions

Alarm Condition

• Notification Appliance Circuit: Alarm devices operate in unison with the Trigger inputs from the main Fire Alarm Control Panel (FACP). When activated by the corresponding trigger input, the associated Notification Appliance Circuit (NAC) will reverse polarity from a supervision state to the alarm state and supply power to the associated notification appliances until the trigger is removed. Each activated NAC will also power the L.E.D. associated with it, the L.E.D. will follow the steady or pulsing state of the NAC. The alarm-activated outputs are reset through the operation of the reset function of the Main FACP.
• Notification Appliance Circuit: If a trouble occurs on an NAC, the associated LED will flash at a 50% rate to indicate a trouble condition; the trouble relay will also activate during a trouble condition of this type. When the trouble condition has been restored, the L.E.D. and trouble relay will return to their normal state. (See notice.)
• DC Power Circuit: If a trouble occurs on the DC Power output, the DC L.E.D. will flash at a 50% rate to indicate a trouble condition; the trouble relay will also activate during a trouble condition of this type. When the trouble condition has been restored, the L.E.D. and trouble relay will return to their normal state. (See notice.)
• AC: When the Power supply detects the A.C. power input has fallen below an acceptable level the AC Power L.E.D. will fl ash at a 50% rate to indicate a trouble condition, the trouble relay will also activate during a trouble condition of this type and after a programmed delay the Low AC relay will also activate. When the trouble condition has been restored, the L.E.D. and trouble relays will return to their normal state. (See notice.)
• Low Battery: When the Power supply detects the Battery is no longer functioning properly, the Low Battery LED will flash at a 50% rate to indicate a trouble condition; the trouble relay will also activate during a trouble condition of this type. When the trouble condition has been restored, the L.E.D. and trouble relay will return to their normal state. (See notice.)
• Ground Fault: When the Power supply detects a ground Fault condition, which indicates a short between the Power Supply ground and the Earth Ground circuits, the Ground Fault LED will flash at a 50% rate to indicate a trouble condition. The trouble relay will also activate during a trouble condition of this type. When the trouble condition has been restored, the L.E.D. and trouble relay will return to their normal state. (See notice.)
• Communication Trouble: If the Bulk Power Supply and Control Board lose communication with each other, the Comm L.E.D. will flash at a 50% rate to indicate a trouble condition; the trouble relay will also activate during a trouble condition of this type. When the trouble condition has been restored, the L.E.D. and trouble relay will return to their normal state. (See notice.) Standby Operation
• Notification Appliance Circuit: When in standby operation, the NAC will be in the reversed supervision polarity, and the associated LED will be off.
• Exception: When the NAC is programmed to be a DC Power Output, the associated LED will be on during normal standby operation.
• DC Power Circuit: When in standby operation, the DC Power will be on and the DC Power LED will be illuminated.
• AC: When in normal operation, the AC Power LED will be on steady.
• Low Battery: When in normal operation, the Low Battery LED will be off.

Battery Maintenance

The PSN-106 should be tested at least once a year for proper operation as follows:

• Output Voltage Test: The DC output voltage should be checked for proper voltage level under normal load conditions. Refer to the Power Supply Output Specifications Chart.
• Battery Test: Under normal load conditions, check that the battery is fully charged. Check specific voltage both at the battery terminal and at the board terminals marked [+BAT-] to ensure there is no break in the battery connection wires.
  Note: Maximum charging current is 1 Amp.
  Note: Expected battery life is 5 years; however,it is recommended to change batteries in 4 years or less if needed.

Electrical Operating Characteristics

The system uses a “Sealed Lead Acid” or “Gel-Cell” type of battery with a capacity of from 7 to 55 amp-hours. Fuse must be replaced with the same size and rating (8A-250VAC, Time Lag).

Notification Power Supply

• Primary AC
  • 120VAC 50Hz~60Hz, 5.1AMP
  • Min Low AC Detect 97VAC
  • 240VAC 50~60Hz 2.5AMP
  • Min Low AC Detect 190VAC
• Common Relays
  • 3A @ 125VAC (Resistive)
  • 3A @ 30VDC (Resistive)
• Battery Charging
  • 27.3VDC @ 1A
  • Low Battery Detect @20.4VDC
• Earth Fault to Any Terminal
  • 0 Ohms
• Notification Appliance Circuits 1-6
  • 24VDC @3A Power Limited Regulated
  • Synchronization supported on NAC 1-6
• DC Power Circuit
  • 20.4VDC – 27.3VDC @3A Power Limited
  • Special Application RSG-DH1224
  • Listed Door Holder
• Fuse Specification
  • 8A-250VAC Time-Lag
    Note: Total current draw from NAC 1-6 and DC Power must not exceed 10 amps.
• F.C.C.
  This device has been verified to comply with FCC Rules Part 15, Class A Operation is subject to the following conditions:
  • This device may not cause radio interference.
  • This device must accept any interference received, including any that may cause undesired operation.
• Requirements
  The system must be fully tested after installation. Intended for indoor use in dry locations only. Separation of power limited wiring from non-power limited wiring must be at least 1/4″.

Wiring Options

Class B Trigger and Class B Notification Circuit Trigger

Class B Style Y Trigger and Class B Style Y Notification Circuit. Trigger inputs IN1 & IN2 can be connected to a Class B Style Y NAC trigger circuit as shown below. The PSN-106 provides 6 Class B Style Y NAC circuits, each rated for 3 amps. Each NAC circuit is individually selectable for Class A Style Z/ Class B Style Y operation. Refer to the Dip Switch Programming for information on dip switch programming.

Class A Trigger and Class A Notification Circuit

Trigger inputs IN1 & IN2 can be connected to a class A NAC trigger circuit as shown below. The PSN-106 provides 3 Class A NAC circuits, each rated for 3 amps. Each NAC circuit is individually selectable for Class A/B operation. Refer to the Dip Switch Programming section for information on dip switch programming.

Class B – Multiple Supply Trigger

A single Class B Style Y trigger can be used to activate multiple supplies as shown below. The minimum wire gauge between
supplies is 18 AWG. A maximum wiring distance of 10,000 feet is allowed from the triggering FACP and the last supply in the chain. The EOL resistor is located on the last supply in the chain.

Class A – Multiple Supply Trigger

A single Class A Style Z trigger can be used to activate multiple supplies as shown below. The minimum wire gauge between supplies is 18 AWG. A total wiring distance of 10,000 feet is allowed from the triggering FACP to the last supply in the chain (including the return wiring).

Pass Thru Mode

The NAC output of the PSN-106 can be used to trigger additional supplies. Up to 3 supplies maximum can be configured in this manner. Full system synchronization is maintained. The minimum wire gauge between supplies is 18 AWG. A maximum wiring distance of 10,000 feet is allowed between each supply.

Wire Routing

A minimum of ¼ inch separation must be maintained between Power Limited, Non-Power Limited, and High Voltage wiring. See the illustration for suggested wire routing.

Reference EOL

The PSN-106 uses a standard 5.1k EOL resistor (Potter part number 3005013). In retrofit applications where a value other than 5.1k is already in use, a reference EOL input is provided. Simply connect a matching EOL resistor to the reference EOL input. All NAC wiring will then be supervised based on this value. Any EOL value from 2.0k to 27k can be used. If no reference EOL is connected, 5.1k is assumed.

Dip Switch Programming

Input Trigger Type

(Selects the behavior of trigger inputs.)

• Normal Trigger: The Trigger input is sampled at a high rate. Used for simple DC triggers, as well as for sync follow and pass-thru mode. A NAC configured as a constant output will follow the trigger and immediately activate.
• Slow Debounce (Slow Trigger): Allows a non-standard trigger signal to be used for activation. The slower response allows the outputs to remain active when the trigger signal is changing. This trigger will operate with ANSI Temporal Code 3.
• Synchronization Triggers (Potter, Gentex®, Wheelock®, System Sensor®): Used with QuadraSync to maintain synchronization of devices from different manufacturers.

Bulk Supply Options

AC Report Delay:
Selects a number of hours to delay before activating the general trouble relay in response to a low AC condition. Note that the Low AC relay is activated immediately.

Supervision:
This should always be in the OFF position to allow supervision of the wiring between the 24 VDC bulk supply board and the NAC control board. NAC control board global options

Class A/B Selection

Each pair of NACs can be individually configured for class A/B operation. When class A is selected, the individual NAC options for the first NAC in the pair will apply. For example, is the circuit pair 1&2 is programmed for class A operation, then only the individual NAC option dip switch for circuit 1 will be used.

Door Holder AC Dropout delay

If the DC power output is used as door holder power, it can be configured to drop out in response to a low AC condition in order to minimize standby current. To minimize nuisance conditions ,a selectable AC dropout delay is provided. If “No doorholder dropout on AC Loss” is selected,the  door holder power will drop out in response to an alarm condition only.

DC Power Output is Door Holder

Specifies whether the DC power output will act as door holder power. If selected, the DC power will drop out in response to an alarm condition and optionally a low AC condition.

Trouble Memory Enabled

When enabled, any trouble conditions will be stored in memory after the condition has been corrected. Stored trouble conditions are indicated on the LED associated with the original trouble condition.

Individual NAC Options

Conditions for activating each NAC are individually programmed. Trigger Selection: specifies which trigger input(s) to respond to.

• Trigger 1: NAC will activate when Trigger 1 is activated
• Trigger 2: NAC will activate when Trigger 2 is activated
• Trigger 1 or Trigger 2: NAC will activate when either Trigger 1 or Trigger 2 is activated.
• Combo: Can be used to separately control horns & strobes when used with one of the supported synchronization Protocols. If Trigger 1 is present, both horns and strobes will be activated. If only Trigger 2 is present, horns will be disabled, and strobes will be activated.
• Follow DC Power: When selected, the NAC will exactly follow the activation/deactivation of the DC power output. Can be used to create additional door-holder power circuits.
• Always ON: Used to create a constant ON power output.
• Unused: The NAC circuit will be unused.
• Output Selection: Specifies the output pattern to be generated when the output is activated.

Indicator LED Behavior

The NAC control board contains an indicator LED for each NAC circuit and a comm LED:

• NAC Led: Fast Flashing = NAC trouble (EOL missing, EOL shorted, or current limit condition)
• NAC Led: Solid or Pattern = NAC active. LED will follow the pattern of NAC
• Comm: Used only to indicate supervision activity between bulk and control boards.

If the trouble memory option is enabled (Trouble Memory dip switch option on), the LEDs indicate if any previous trouble conditions are stored in memory.

Example: Suppose Trouble Memory is enabled, and a NAC circuit EOL is detected as missing. While the EOL is missing, the LED associated with the NAC will flash continuously to indicate the trouble. If the EOL is replaced and the trouble condition is no longer present, the LED will begin issuing the trouble memory flash. This flash indicates that a trouble existed previously, but is no longer present. The trouble memory indication consists of two short flashes issued once per second.

Clear/reset Trouble Memory by setting the Trouble Memory dip switch off, and then back on to enable the feature.

The bulk supply board contains four indicator LEDs:

• AC Power: ON = AC Present, OFF = AC not present.
• Low Battery: Fast Flashing = Low battery condition. ON = Battery Charger Failure
• Earth Ground Fault: Flashing = Earth fault detected.
• Comm: Used only to indicate supervision activity between bulk and control boards (about one per second).

Battery Calculation Worksheet

Standby current for the PSN-106 is 75 milliamperes.

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Potter PSN-106 Power Supply-FAQs