SKF FL15 - Operation of Alarm Relays; Individual Alarms (SHL, SL)

FMON10JEN 07.04.2017 Rev. 10J
47 (47)
14.1.2 Operation of alarm relays
The operation of relays 1 to 10 can be configured in following ways:
- Individual alarm relay for each flowmeter in SKF Flowline monitor (configuration SHL and SL)
- Two individual alarm relays for each flowmeter in SKF Flowline monitor (configurations DHL, DL and
HL)
- Common alarm relays for all flowmeters in SKF Flowline monitor (configuration C)
Relay 11 indicates faults in electronics. It is independent from the selected configuration.
Configuration is selected by the user interface of the Monitor See paragraph 9.5.5 Alarm mode of Relay-CAN
module.
All relays have potential free contact. Relay alarm state is open contact.
When Flowline monitor is in power off state, the relays # 1 …10 are contact closed and
relay #11 is contact open.
Relay max. contact rating: 50VDC/ 0,5A, resistive load
Connectors for relay outputs: Screw connectors, 3.81 mm spacing for wires 0,14 to 1.5 mm².
Individual alarms (SHL, SL)
With these operation modes every flowmeter in the Monitor has a relay, which operates as an alarm relay. If
required, high level alarm can be disconnected. All alarms in the group have the same logical operation.
Configurations choices are:
SL, Separate alarm low, flowmeter specific low level alarm.
High level alarm does not affect operation of the relay.
SHL, Separate alarm high and low, flowmeter specific high and low level alarm.
Both alarm types affect operation of the relay.
See chapter 10.4.3 Alarm filtering.
Alarm delay is set by FIL-value in the same way as for the common alarm relay on Monitor group electronics.