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Standby action
Output
6.9.3 Digital inputs
This applies to terminals pairs LALC, LBLC (Figure 4). Highlight the relevant terminal pair, then operate the
scroll key to reveal the configuration menu.
Module Ident
Type
PV
Invert
6.9.4 Digital outputs
This applies to terminal pair 2A2B (Figure 4). Highlight 2A2B, then operate the scroll key to reveal the
configuration menu.
Module Ident
Type
PV
Min On Time
Invert
Inertia
Backlash
Standby action
Output
6.10
DC OUTPUT
This option provides a voltage (terminals 3A3B only) or mA output. Terminal location is shown in Figure 4.
Caution: There are no mechanical interlocks to prevent a chassis with the dc output option
September 18
FEC920: USER GUIDE
For Type = Valve Raise only, this specifies the valve action when the instrument is in
standby mode.
Continue: Output continues at the demanded level.
Freeze: The valve stops being driven.
Off = relay contacts open; On = relay contacts closed.
Dig.In
Contact I/P
0 = contact is open; 1 = contact is closed.
Inverts the sense of the input.
Dig.Out
On Off O/P, Time Prop O/P or Valve Raise
For On Off O/P, a value
For Time Prop O/P, the value is the demanded output percentage.
For Type = Time Prop O/P only, this allows a minimum on time to be specified.
Configurable range = 0.1 to 150 seconds
Inverts the output sense for digital outputs; or the input signal for digital inputs.
For Type = Valve Raise only, this allows a value to be entered (in seconds) to take into
account valve run-on.
For Type = Valve Raise only, this allows a value to be entered (in seconds) in order to
compensate for backlash in the valve linkage.
For Type = Valve Raise only, this specifies the valve action when the instrument is in
standby mode.
Continue: Output continues at the demanded level.
Freeze: The valve stops being driven.
Off = output being driven low; On = output being driven high.
being fitted into a 'sleeve' or 'case' which has previously been wired for the
standard relay output. Before fitting the chassis into the case, it should be ensured
that the terminal wiring is not attached to live voltage supplies, as such voltages
may cause permanent damage to the instrument.
A5E45696052A Rev-AA
0.5 drives the output high, otherwise, the output is driven low.
Page 101
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