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Weco Series MSM
 

Surveillance and Fault Alarm Modules MSM

Description

This module is recommended for monitoring large installations in which direct localization of the signalled fault is essential.

The horn relay is energized via a conductive thyristor. The horn can be deactivated via the accept button at terminals QQ. A transistor supplied with clock pulses energizes the flashing light relay, which initially drops out when the fault is cleared. The disturbance signal can also be used to activate simultaneously an external lamp in the annunciator or illuminated mimic diagram via a second terminal. Power is supplied internally from a built-in power supply. Terminal B is the reference point for the electronic circuits and for the neutral conductor of the disturbance input voltage. Terminals N and BZ must be bridged prior to commissioning. This basic module featuring ten disturbance inputs can be complemented with up to ninety further disturbance inputs. The add-on modules each have fourteen disturbance inputs.

Technical Data

Operating voltage: 220 VAC ± 10%
Power consumption: 1 VA
Disturbance input voltage: 220 VAC
Number of disturbance inputs per base unit: 10
Per add-on unit: 14
Output relays:
DPDT relay with dry contacts
Maximum contact rating current: 4 A
Switching capacity: 250 VAC / 1250 VA
24 VDC / 120 W
Operating temperature: 0° to 40°C / 32° to 104°F

Dimensions

Height:
mounting rail:
H-35:
84 mm / 3.31 in.
G-32: 89 mm / 3.51 in.
H-15: 83 mm / 3.27 in.
Length: 68 mm / 2.68 in.
Width: 90 mm / 3.54 in.


 
Ordering Information