PT900-12 Monitor/Controller
Rev 2.0
18
Setting alarm contacts as Normally Open or Normally Closed
To set the alarm contacts as normally open or normally closed set the
jumpers for each relay located right above the relay on the control
module. See figure 6. Each jumper is a 3 pin header with a mating
connector to connect any two of the three pins. To set the contact type set
the jumpers as show below.
Jump Pin 2 and 3 for
Normally closed contacts
Jump Pin 1 and 2 for
Normally Open contacts
