Notifier Single Output Module, Addressable, Built-in Isolator M701E

What this module is for

A fire alarm panel watches its detectors and call points over a loop, but it often also has to make other things happen. A module like this gives the panel a point on the loop where it can switch a load.

This Notifier unit handles one output. Other modules in the same range handle inputs, or a mix of the two.

How it works

• Supervised mode: the wiring to the load is checked while idle. On command the supervision drops out and a double pole relay connects the outside supply to the load.
• Unsupervised mode: nothing is monitored, and the unit behaves as a set of contacts for the panel to operate.
• Form C: this is another name for changeover contacts, which have a common terminal plus a normally open and a normally closed side.
• Short circuit isolator: an isolator cuts off a shorted section of the loop, so the devices beyond it can keep working from the other direction.

Where to use it

Typical jobs are driving a circuit of sounders from its own supply, or signalling plant such as a shutter or air handling control through contacts.

It is rated IP30 as supplied. Its rating rises only inside the M200E-SMB surface box.

What the figures mean in practice

• Resistive load: the 2A figure is for simple loads. Coils and motors are harder on contacts, so allow a margin or use an interposing relay.
• Standby current: this small draw is what the module adds to the loop while idle. Add it to your loop calculation along with every other device.
• No communications: the standby figure is taken with no polling on the loop, so a working loop may draw more.

Installing it

• Choosing a housing: fit it in a wall box, clip it to a DIN rail inside a cabinet, or use one of the surface boxes. The knockout version suits 20 mm conduit entries, and the larger box takes up to six modules.
• Setting the address: set the rotary switches to the address your panel programme expects. The switches stay visible and reachable on every mounting method.
• Fault finding: the light pipes carry the LED to two sides, so the status can be read with the cover of the surface box still on.

Planning your system

Budget for the external power supply as well as the module, and size it for the load. Its voltage has to stay above the module's threshold, or the panel will show a fault.

Check the fit against your fire alarm panel too. It needs one of these protocols, and the module's address has to be programmed in.

If the output releases doors or controls shutters, agree how they should behave in an alarm with whoever holds the fire strategy. That decision belongs to the design of the whole fire alarm system.

Ratings explained

• IP30: the 3 means protection against solid objects over 2.5mm. The 0 means no stated protection against water.
• IP44: the 4 means protection against objects over 1mm and the second 4 against splashing water. It applies only with the module inside the M200E-SMB.