SATEC PM180 Operation Manual - Manual (Page 70)

‎Chapter 7 Programming the PM180 Programming Relay Outputs
68 PM180 Substation Automation Unit
Option Range Default Description
Fault Recorder Checked
Unchecked
Unchecked When the box is checked, a positive
transition on the digital input (open to
closed transition event) triggers the
Fault recorder.
Debounce Time
The debounce time is assigned to digital inputs in groups of 8 adjacent inputs. So,
DI8 has the same debounce time as inputs DI1 through DI7, while DI9 through DI16
are allowed to have another debounce time setting. When you change the debounce
time for one digital input, the same debounce time is automatically assigned to all
inputs related to the same debounce group.
Recording Digital Input Events to the Sequence-of-Events Log
To log transition events on digital inputs into the Sequence-of-Events log, you only
need to check the SOE log boxes for the digital inputs you want to be recorded. If
you link a digital input to the Fault recorder, it is automatically connected to the SOE
log. The pulse mode settings do not affect the SOE log.
Each digital input is recorded to the SOE log independently. A timestamp is typically
accurate to within 1 ms at 60Hz and 1.25 ms at 50Hz. The debounce time is included
in the timestamp.
Triggering the Fault Recorder through Digital Inputs
Any digital input can trigger the Fault recorder if its Fault recorder box is checked.
When an open-to-closed state transition is detected on the digital input, the global
“External Trigger” event is generated in the device. If the Fault recorder is enabled
(see
Device Mode Control ), it triggers the Fault recorder to record waveforms or RMS
data for the event.
When a number of digital inputs linked to the Fault recorder generate events at the
same time, only the first of them triggers the Fault recorder and logs a fault event into
the Fault log file. The next external fault event is not triggered until all the digital
inputs linked to the Fault recorder are released, but all operations on digital inputs
are automatically recorded to the Sequence-of-Events log. This does not affect
operations of the internal analog fault triggers that work independently.
Notice that the “External Trigger” event can also be tested through the control
setpoints from the “Static Events” trigger group to trigger another action on your
selection.
Programming Relay Outputs
The PM180 supports up to three expansion Relay Output (RO) modules with a total
of 24 relays (RO1 to RO24). I/O numbers are automatically assigned to the relay
outputs in the order of connection when the device is powered up.
The PM180 allows you to program all relay outputs regardless of whether they are
actually present in your device or not. The relays that are not present in the device
are considered “virtual” relays and can be used in the same way as real relays with
the only difference that they cannot transmit signals outside of the device. The
“virtual” relays may be with the control setpoints as temporary event storage to
transfer events between setpoints.
Each relay can be operated either locally from the control setpoints in response to an
internal or external event, or by a remote command sent through communications, or
can be directly linked to an internal pulse event produced by the device.
To configure the relay outputs in your device, select General Setup from the Meter
Setup menu, and then click on the Relay Outputs tab.