UMAX180800, 20 Thermocouple, 2 RTD, 4 Inputs, 6 Relays Dual CAN Controller
Version 1
Page: 24-71
By default,
‘Normal Logic’
response is used for the relay outputs. In
‘Normal Logic’
response,
the Common pin is connected to the Normally Closed pin if the source of the respective relay
output is triggered ON, the Common pin is connected to the Normally Open pin.
In the case of
‘Inverse Logic’
response, the Common pin is connected to the Normally Open
pin
when the source of the respective relay output is triggered ON. When the source of the
respective
relay output is triggered OFF, the Common pin is connected to the Normally Closed pin.
In the case of
‘Latched Logic’
response, the Common pin is toggled between Normally Closed
and
Normally Open pins every time the source of the respective relay output goes from OFF to ON.
The
‘Inverse Latched Logic’
response will respond the opposite way.
The
‘Toggle Logic’
lets the relay output toggle between Normally closed and Normally Open
pins for a configured frequency. The time for switching from one state to the other state results
the
“Relay Toggle Rate”
which is in milliseconds and by default 500ms.
3.6.2 Relay Output Control / Enable Sources / Override Source
The relay output can be configured to be commanded and/or enabled by the control sources
listed in Table 5. This table also displays the number associated to the control sources which
can be selected. The default control source is highlighted while the default Enable Source
and Override Source is configured to
‘Control Not Used’.
The selected control source in the
“Relay
Control Source”
parameter is the main
commanding source of the relay output based on “
Relay Output Type”
parameter. A delay
can be set for both output states when
“Relay Enable Response Delay”
is set to be
‘TRUE’.
In case the output state should turn low after a certain amount of time, the parameter
“Relay
Delay
OFF Time”
can be set. Whereas the
“Relay Delay ON Time”
can be configured to set
a delay before switching from the OFF-state to ON-state. Both delays are configurable in
milliseconds.
3.6.3 Relay Output Enable
The
“Relay Enable Source”
will determine whether or not the relay output will be commanded
by the
“Relay Control Source”
. There are six different
“Relay Enable Response”
in which
the enable signal can be used. These responses are listed in Table 18.
Table 18: Relay Enable Response
Value
Meaning
0
Enable When ON
1
Enable When OFF
2
Disable When ON
3
Disable When OFF
4
Enable When ON Else Keep State
5
Enable When OFF Else Keep
State
