31
6100 Series Manual
The "ON PRESSURE" is the lowest pressure you want in the enclosure and will start the control action on
when pressure goes below this value.
The "OFF PRESSURE" is when the valve shuts off. When the pressure is between these two values,
nothing will happen.
The "ON PRESSURE" function is active until the "OFF PRESSURE" is reached
Note!
This function does not operate during purging cycle and only operates after purging and pressurization.
The "ON PRESSURE" always has to be lower than the "OFF PRESSURE". This cannot be reversed.
I.S. Inputs 1 - 2
There are (4) intrinsically safe inputs for activation of various outputs and actions by the EPCU. These
inputs only accept a dry contact for activation and are supplied by the EPCU’s galvanically isolated barrier.
The configurations of the inputs for various actions are done through the user-interface controller. Only one
function can operate per input. The intrinsically safe inputs can be configured through the UIC to activate the
auxiliary relays, energize the Rapid Exchange valve, de-energize the enclosure contacts, and shut the system
down, as well as other actions and outputs. To monitor wiring, the SRM-6000 (sensor resistor module, not
required, ordered separately) can be added to detect shorts or breaks in the inputs' wiring to the contacts.
Outputs
Enclosure 1 and Enclosure 2
There are (2) normally open dry contacts for the enclosure power that can be energized only after a
successful purging and a minimum enclosure pressure is maintained. Loss of pressure will cause the contacts
to de-energize unless the shutdown timer is activated or bypass mode is implemented. These contacts
operate simultaneously.
Auxiliary 1 and Auxiliary 2
The auxiliary outputs can be used for control or alarms. Auxiliary 1 gives an output when the system is purging
or compensating for leakages if the ‘Pressure as Input’ is being used. Auxiliary 2 can be programmed by the
user for various conditions of the system. See ‘OUTPUT’ configuration for output parameters.
ON PRESS
time
Set PRESS
OFF PRESS
PRESSURE AS INPUT
Co
nt
ro
l a
cti
on
off
Co
nt
ro
l a
cti
on
on
Co
nt
ro
l a
cti
on
off
Operation
