BELIMO FSKN24-BAC Remote Testing Module Instruction Manual

BELIMO FSKN24-BAC Remote Testing Module

Power supply and transformer sizing
See FSKN24-BAC or FSKN120-BAC data sheets and individual actuator data sheets for power draws. If a relay is used on the output of the FSKN use VA or watts of relay for sizing power supply. See FSKN Application Guide for typical wiring diagrams. The FSKN120 will accept 230V also although in the Americas it is rarely employed ..

Safety notes
The FSKN is designed for use with spring return closed containment (compartmentation) applications only per Chapter 7 of the International Building Code (IBC) and International Fire Code (IFC). It is a testing module. The FSKN is an interface between a BACnet or Modbus control system and an actuated life safety damper. It’s purpose is to test the damper per code requirements. It has no safety functions.

WARNING!
The FSKN is not to be used in smoke control systems for any safety function. It is not UL 864 UUKL listed. It is an interface for testing spring return containment dampers per Chapter 7 of the IBC and IFC only. Use the FSKN with spring return closed dampers only.
For Data sheets, BACnet or Modbus programming or application wiring diagrams go to: www.belimo.com/us/shop/enUS/Actuators/
Fire-&-Smoke-Actuators/FSKN24-BAC
For more information contact Larry Felker, Fire & Smoke Product Manager

Installation

The enclosure is a standard NEMA 1 electrical box. It is surface mounted remotely or on the damper sleeve. If mounted on the damper sleeve the connected ducts must be free to fall away if necessary. Do not bridge the sleeve and duct. Four mounting holes are inside the enclosure. Ground all conduits entering the box either using bonding connectors or normal conduit connections per NFPA 70 NEC and local codes. The life safety code requires flex or hard conduit for both 24V and 120V circuits. Only the 120V model requires a grounding screw connection .

FSKN mounted in its enclosure
Surface mount the FSKNxx-BAC using the 4 holes on the base of the enclosure. Do not drill inside of enclosure. Mark holes, drill, and then mount the enclosure. Use bolts with lock washers inside damper sleeve or on any vibrating surface like ductwork. The enclosure has a standard screw cover, cULus. 6″ x 6″ x 3″ ANSI 61 polyester finish. 3 lbs. 16 ga. carbon steel.½” and¾” KOs. Enclosure: JB-3954-KO (Bud Industries). Run the BACnet RS485 cable through an approved squeeze connector. The shields are to be grounded at one location only, typically at the originating controller. See the BACnet standard for RS485 wiring options.

Dimensional drawings

Initial Setup

Network wiring connections

The wiring of the line for BACnet MS/TP or Modbus RTU must be carried out in accordance with applicable RS 485 standards.
(1) Set dipswitch 5 [Term] of last FSKN to ON to enable EOL 1500 resistior.
If connected to a network with a mix of 2-wire (non-isolated) and 3-wire (isolated) devices, refer to the ASHRAE BACnet Standard or Modbus controller installation instructions for wiring and grounding information. 3-wire networks are recommended to avoid problems.

Basic FSKN120-BAC wiring

FSKN120-BAC

LEDs description

Basic FSKN24-BAC wiring

FSKN24-BAC

Blink=½ second on,½ second off. Flash=½ second off,¼ second on.

BACnet dip switch settings

For Modbus dipswitch settings see FSKN120 & FSKN24 BACnet and Modbus Information at www.belimo.us/firesmoke/FSKN

the end of line FSKN Dip Switch 5, Term, is set to ON while others are always set to OFF.

Signalisation

Comma n d OPEN / upper position not reached :
LED green blinking| Command CLOSE/ lower position not reached:
LED green on Damper is in OPEN position
---|---
LED yellow on  Damper is in CLOSED position| LED green off    Damper blade is between OPEN and CLOSE
LED yellow off   Damper blade is between CLOSE and OPEN| LED yellow blinking
LED red       blinking| LED red      blinking
error message after 180 seconds| error message after 60 seconds

Initial start-up
Token passing by devices on a MSTP network is specified in the BACnet standard. The status indication LEDs are illuminated as soon as power is applied. The FSKN activates the test sequence with the first power on and expects input on the switch terminals, Closed or open in correct sequence. If nothing is connected to a switch terminal, an error will occur with associated blinking patterns. The error message can be removed by connecting the switch wires and then pressing the Test button or using the Command MV120 4 Reset command. The green LED blinks when power is applied and the actuator is driving open. The green LED is on continuously after the S2 switch makes. A blinking red LED indicates a failure. A blinking yellow LED is a transition indication.

Normal operation

The FSKN relay is closed and the smoke detector and “primary heat responsive device,” manual reset high temperature limit, operate normally.

During normal operation if a test command is issued to an FSKN:

1. The FSKN relay is energized which opens its NC contacts and power is removed from the actuator which then springs the damper closed.
2. The position switch (FSKN terminals S1 & S2, wires S1 & S2 on the actuator) makes (closes) indicating the damper is closed. Damper blade switches may also be employed.
3. After 80 seconds the FSKN relay is de-energized which again powers the actuator and drives the damper open. The switch between terminals S1 & S2 opens. The yellow and green LEDs blink until the damper is reopened fully.
4. When the actuator has driven the damper open either the actuator open switch (wires S4 & S6) or the damper blade open switch again makes and the test is complete.
5. The FSKN then indicates no failure and the information is available to the BACnet controller.
6. If the sequence is incorrect (either the closed switch or the open switch not making or breaking in correct sequence then a Failure message is recorded.
7. Both the Red and Green LEDS will flash while the actuator is opening.
8. After correcting any problem either pressing the Test switch on the FSKN or entering MV120 4 Reset command will change the FSKN Actuator status to normal.

For information contact Larry Felker, Fire & Smoke Product Manager

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