UMAX180800, 20 Thermocouple, 2 RTD, 4 Inputs, 6 Relays Dual CAN Controller
Version 1
Page: 25-71
When the
“Relay Enable Response”
is set to
‘Enable When ON’
or
‘Disable When OFF’,
the
relay output will be commanded according to the combined signal of the
“Relay Control
Source”
and
“Relay Control Number”
only when the signal of the
“Relay Enable Source”
and
“Relay Enable Number”
is ON. Otherwise, the relay output is commanded to the OFF
state.
Similarly, when the
“Relay Enable Response”
is set to
‘Enable When OFF’
or
‘Disable When
ON’
, the relay output will be commanded according to the
“Relay Control Source”
and
“Relay Control Number”
only when the signal of the
“Relay Enable Source”
and
“Relay
Enable Number”
is OFF. Otherwise, the relay output is commanded to the OFF state.
In case the
“Relay Enable Response”
is
‘Enable When ON Else Keep State’
, the relay output
will be commanded according to the signal of the
“Relay Control Source”
and
“Relay
Control Number”
only when the signal of the
“Relay Enable Source”
and
“Relay Enable
Number”
is ON. If the Enable Signal is OFF, the relay output will keep the previous state.
Likewise, when the
“Relay Enable Response”
is configured to
‘Enable When OFF Else Keep
State’
, the relay output will be commanded according to the
“Relay Control Source”
and
“Relay Control Number”
only when the combined signal of
“Relay Enable Source”
and
“Relay Enable Number”
is OFF. Otherwise, the relay output holds the previous state.
3.6.4 Relay Output Override
The
“Relay Override Source”
will determine whether or not the relay output will be
commanded by the
“Relay Control Source”
. This Source has a higher priority than the
Enable Source.
There are two different
“Relay Override Response”
in which the Override signal can be
used. These responses are listed in
Table 19: Relay Override Response Options
Value
Meaning
0
Override When OFF
1
Override When ON
When the “Relay Override Response” is configured to ‘Override When ON’, the relay output
will be commanded according to the signal of the “Relay Control Source” and “Relay Control
Number” by the “Relay Override State” only when the override signal is ON. If the “Relay
Override Response” is set to ‘Override When OFF’, the relay output will be commanded only
according to the signal of the Control Source/Number by the “Relay Override State” only when
the override signal is OFF.
shows the two possible states for the “
Relay Override State
”.
In case of
‘Override State OFF’
, the relay output switches to Normally Open. If
‘Override State
ON
’
is configured, the relay output changes to Normally closed.