Construction
The face plate is made of off-white plastic. Module includes
yellow LED indicator that pulses to indicate normal conditions
and illuminates steady when a short is detected.
Operation
The circuit is automatically opened when the voltage line drops
below four volts. Fault Isolator Modules should be spaced
between groups of addressable devices (maximum 25), in a
loop that protects the rest of the loop. If a short occurs between
any two isolators, then both isolators immediately switch to an
open circuit state and isolate the groups of sensors between
them. The remaining units on the loop continue to fully operate.
The HM-DISO-UL Fault Isolator Module automatically restores
the shorted portion of the communications loop to normal.
Installation
• Mount on a standard junction box (4.0”/10.16 cm
square) which is at least 2.125”/5.398 cm deep
• Terminal screws are provided for “in and out” wiring
• Installation instructions are provided with each module
• Surface mount box available