PRESYS
Instruments
DMY-2015-PB-Energy
Operation
Page 12
On the front panel of the instrument, the LEDs 1 to 8 are associated with alarms for
channels 1 to 8, while the leds 10 and 11 depend on the states of the relays 3 and 4,
respectively. When you activate a relay, the corresponding LED is on, and its deactivation
causes the LED is switched off. The LED 12 indicates that the instrument is connected to the
Profibus network.
In the operation mode it is possible to re-enable the trip alarms configured with failure
manual reset (see section 3.2 - Configuration: Level 3 - Alarms) by following the procedure
below:
(i) The message "B.OUT" flashes when viewing a channel, indicating that the sensor is
broken and the relays with trip alarm were disabled;
(ii) Reconnect the sensor to the instrument terminals;
(iii) The display shows alternatively the value of the process variable and the mnemonic
"FALT" (relays 3 and/or 4 disabled);
(iv) Enable the relays with TRIP alarms according to the steps below:
1. press ACK to show the mnemonic of the disabled relay (“FLT.3” or “FLT.4”);
2. press ENTER;
3. “FLT.3” or “FLT.4” disappears.
4. the display starts to show the next trip alarm mnemonic, if any, or relay
mnemonic (AC.R.3 to AC.R.4) or led (AC.L.1 to A.L.11) latching requiring
acknowledgment.
In order to pass to the next mnemonic without re-enabling the trip relay or
acknowledging an alarm relay or led under latch condition, one must press the ACK key
once again. After all available mnemonics are shown, the display returns to the channel
process variable indication.
Note: If more than one relay is off, you must turn them in sequence, relay 3 to relay
4, pressing ENTER for the mnemonics “FLT.3” and/or “FLT.4”.
presys
