Namur Signals: Relay Contacts - Burkert 8285 El. COND Mode D'emploi

NAMUR signals: Relay contacts

Failure, maintenance request, function check
As delivered, the floating relay outputs of the BASE module are assigned to
the NAMUR signals:
Failure
Maintenance request Contact K3, N/O
Function check
Module BASE (Administrator)
Output current I1
Output current I2
Contact K4 (NAMUR Failure)
(NAMUR maintenance)
Contact K3
(NAMUR function check)
Contact K2
Contact K1 (Limit)
Return
Failure is active
when a value has exceeded (or fallen below, resp.) a preset "Failure Limit
Hi" or "Failure Limit Lo", when the measured value is out of range or in the
event of other failure messages. That means that the equipment no longer
operates properly or that process parameters have reached a critical value.
Failure is disabled during function check.
Maintenance request is active
when a value has exceeded (or fallen below, resp.) a preset "Warning Limit
Hi" or "Warning Limit Lo", or when other warning messages have been acti-
vated. That means that the equipment is still operating properly but should
be serviced, or that process parameters have reached a value requiring inter-
vention.
Warning is disabled during "Function check".
Function check is active:
• during calibration
• during maintenance (current source, meas. point maintenance)
• during parameter setting at the Operator level and the Administrator level
• during an automatic rinsing cycle.
62
Contact K4, N/C (signaling current failure)
Contact K2, N/O
NAMUR signals: Factory setting of contacts
7.00pH
19.0 °C
• Select parameter setting
• Administrator level
• Select "Module BASE" (Fig.)
You can define a delay time for "Maintenance
request" and "Failure", resp. If an alarm message is
released, the contact will only be activated after expiry
of this delay time
Block
8285