HESCH HE 5731 Compact - Operation of the Control; Normal Operation

HE 5731 Operating instructions
34
# 373344, Version 1.5
Operation of the control
8. Operation of the control
8.1. Normal Operation
Operation is started by applying the supply voltage. The valve cleaning is controlled via
the inputs and outputs of the device.
Note!
All valve outputs of a system refer to the same mass (-). It is permitted to
use one ground line for several inputs.
1) As long as the start input (START) is
closed, the valves are controlled with the
set control times. Prerequisite: The enable
input (ENABLE) is closed.
2) A push-button signal at the post-cleaning
input (POSTCL) starts the triggering of the
valves with the set control times. The num-
ber of cleaning cycles is specified in the
parameters. Prerequisite: The enable input
(ENABLE) is closed.
3) To initiate cleaning, the enable input (ENA-
BLE) must be closed. Cleaning can be trig-
gered by closing the start input, a push-
button signal at the post-cleaning input
(POSTCL) or by exceeding the upper dif-
ferential pressure threshold.
WARNING! In test mode, valves can also
be controlled without release.
Operating or fault signal relay
In error-free operation, the contact between terminals 20
and 22 is closed.
The following causes lead to an error message:
1) power failure (fail-safe operation)
2) bus error
3) device fault (parameter error)
4) valve errors
5) p-alarms
Note!
Post-cleaning is suppressed as long as precoating is activated.