MAF Ancillary Relay Wiring, Door Holder Wiring

F3200 Installation & Programming Manual		Document No: LT0122
Installation & Wiring

8.4	MAF ANCILLARY RELAY WIRING

The original (AS1603.4) F3200 has a single Warning System output and Isolate Switch, namely the Anc3/Bells relay, configured as Bells +/-, and the “Bells Isolate” key.

It is now typical for FIPs to control two outputs, i.e. a single, External Bell, and a separate building Warning System which produces tones to AS2220 (as specified in AS4428.1).

The MAF module has 3 Ancillary Relays. Typically, Anc 1 is used for door holders, air- conditioning shutdown etc; Anc 2 is used for the External Bell; and Anc 3/Bells is used for the Warning System. Wiring of the External Bell should be as per Fig 8.4.2 using Anc 2. The Warning System is covered in Section 8.5. Anc 1 and Anc 2 each have 1 set of voltage free contacts available on screw terminals, and a second set to which the screw terminals are not fitted as standard. Where supervision of wiring is required, the supervision (SUP) input is used as shown in the following figures.

Door Holder Wiring

Door holders are typically powered through normally closed contacts from the non-battery backed supply (+VNBF). As door holders are inductive, a suppression diode should be fitted between 0V and the door holder positive line.

Where door holders have individual manual release buttons, suppression should be fitted at each device.

Observe polarity, the cathode of the suppression diode is connected to the positive line.

Where supervision is required, the recommended connection is as shown in Fig 8.4.1 A or B with a return from the furthest door holder. The alternative shown in Fig 8.4.1 A does not supervise the loop.

The 24V relay used at the end of the loop in Fig 8.4.1 B only needs to switch low current.

"Door Holder" mode supervision "looks for" the presence of voltage when the ancillary relay is de-energised.

Plant Relay/Solenoid Wiring

Where a plant relay is to be energised on Ancillary Relay operation it would typically be powered through normally open contacts from a battery-backed supply.

If wiring supervision is required, it is connected as shown in Fig 8.4.2. "Load" mode supervision looks for a resistance to 0V when the ancillary relay is de-energised. For a very low resistance load (ref Specifications Section 3.4.2) a series diode must be fitted as shown.

Heavy Load Wiring

If a load greater than 2A resistive (1A dc inductive) needs to be controlled by F3200 then this can be achieved with the addition of a 24V Bell Monitor Board (PA0494). This can switch up to 5A dc (resistive) and supervises the load wiring for open and short circuit faults.

Further details for the Bell Monitor Board are contained in LT0190. A representative wiring diagram is shown in Figure 8.4.3. If the load exceeds 2A dc then the power connection must be taken off +VBF2 or directly off the battery terminals via a suitable fuse (but not the +VBF1 terminal). The fuse and wiring are supervised by the Bell Monitor Board, as it will generate a fault if power to it fails.

Page 8-12

5 July 2001

Issue 2.7

F3200 specifications

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Tyco F3200 manual MAF Ancillary Relay Wiring, Door Holder Wiring, Plant Relay/Solenoid Wiring

Models: F3200