Microtel MicroWin 2000EX - Manual (Page 33)

MicroWin 2000EX Manual
27
The following describes the five types of Follow Channels:
1) Follow Channel’s State
Whenever the followed channel’s state changes, opens or closes, this output will do the same,
open or close, respectively. If the followed channel is an analog channel, this output will be
closed only while the analog is in a fault condition (above high setpt or below low setpt).
2) Follow Channel’s Fault Condition
Whenever the followed channel’s state changes to its fault condition, this output will close.
When the followed channel’s fault condition clears, this output will reopen. If the followed
channel is an analog channel, this output will be closed only while the analog is in a fault
condition (above high setpt or below low setpt).
This is very close to the above setting of Following Channel’s State. The only difference
comes in when the channel it is following is a Normally Closed channel type: Digital Input
Normally Closed and Power Fail. There is a difference since the channel’s Fault State is
when the input is Open.
3) Follow Channel’s Alarm Condition
Whenever the followed channel goes into an alarm condition, this output will close. When
the followed channel’s alarm condition clears, this output will reopen.
The followed channel should not have its Alarm Configuration set to be a Status channel,
since an alarm condition will never occur. In this case, this output will always be Open.
4) Follow Channel’s Fill Algorithm
Following a Fill Algorithm, this output will Close when the followed analog state goes
below its low set point. The output will then Open when the followed analog state goes
above its high set point.
5) Follow Channel’s Empty Algorithm
Following an Empty Algorithm, this output will Close when the followed analog state goes
above its high set point. The output will then Open when the followed analog state goes
below its low set point.
Channel Labeling Options
MicroWin 2000EX can read and display a channel’s current state. How this data is shown can
be setup on this form. With Digital Channel Types, any labels (15 characters or less) can be
used for the Open and Closed conditions of the channel. With Analog Channel Types, the 0%
to 100% value that is usually reported can be scaled to some other range values, for example, 20
ft to 200 ft.
Labeling Options for Digital Channel Types