Operation; General Operation; Alarm Operation - Pentair Goyen Mecair FFD Installation And Operation Manual

7 OPERATION

7.1 GENERAL OPERATION

When the sensor setup is complete, the operation of the FFD may be monitored from the front panel by checking the
STATUS LED. During normal operation, the system settings are as follows:
The STATUS LED is illuminated GREEN to show that power is present, and no alarms exist.
•
The STATUS LED flashes at one-minute intervals to indicate the completion of the averaging period.
•
Both alarm relays will be non-energized.
•

7.2 ALARM OPERATION

The FFD has two independent alarm relay outputs whose levels are set during STEP 4 of the setup procedure (see page 17).
RELAY 1 – High-level or Limit alarm: this alarm level can be adjusted by the user to suit the application.
•
RELAY 2 – Early Warning alarm: this alarm level is fixed at HALF the level of the high alarm setting.
•
The STATUS LED indicates the alarm status (see table below for details).
STATUS LED MEANING
GREEN Emissions are below HALF of the 'high level' setting (i.e. below
the early warning alarm threshold)
ORANGE Emissions are above HALF the 'high level' setting (this triggers
the EARLY WARNING alarm).
RED Emissions are above the 'high level' setting (this triggers the
HIGH alarm).
Rapid Pulsing Internal error
GREEN <> RED
The alarms are non-latching, so that when the plant returns to normal operation, the alarms are automatically cleared
(after the alarm delay period of one or two minutes).
Typically, the alarm relay outputs are connected to an external latching alarm module.
20 INSTALLATION AND OPERATION MANUAL – OWNER'S RECORD FFD MANUAL – FILTER FAILURE DETECTOR
.
EFFECT
RELAY 1 – OFF
RELAY 2 – OFF
RELAY 1 – ON
RELAY 2 – OFF
RELAY 1 – ON
RELAY 2 – ON
The relays and 4–20 mA output retain their
pre-fault state (refer to Troubleshooting
on page 23).