United Security Products AVD-45c Handbuch Seite 226

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212 UDC 6300 Process Controller Product Manual 1/03
5.23 Auto/Manual Station
Introduction
When you select “AM STA” (auto manual station) under “OPTION”
setup group, function prompt “DIG IN1”, “DIG IN2”, “DIG IN3”, “DIG
IN4”, “DIG IN5”, or “DIG IN6” (digital input options), contact closure on
the selected digital input causes the controller to switch to Auto/Manual
Station mode.
Function
As shown in Figure 5-5, State 2 is the “A/M Station mode” where the
programmable logic controller (PLC) output is sent through the
Auto/Manual Station. You can switch to manual and change the output at
the controller. (It uses PIDSET2.)
State 1 is the “Backup PID mode” which is triggered by opening the
Digital Input. (It uses PIDSET1.)
Figure 5-5 is an example using DIG IN 1 as the selection under
“OPTIONS” Set Up Group.
Figure 5-5 Auto/Manual Station Using Digital Input #1 and Backup Control Feature
T/C
T/C
PLC
PV
SP
IN1 IN2
PID A
OUT1 OUT1
Output 1
4-20 mA
To valve
Aux
Output
SP1 =
new
selection
DI #1 = "AM STA"
(new
selection)
State 1:
DI #1: Open
BACKUP
PID
CONTROL
State 2:
DI #1: Closed
A/M STATION
LSP = SP1
LSP = SP2
– Direct action
– PD+MR
– SP = SP2
– PV = IN2
– PIDSET2
PIDSET1
P =
I =
D =
same
as
PLC
Configure
State 2 per
next page.
Control output
4-20 mA
PVPV
Alarm
Output on
Manual
Mode
(new
selection)
PD+MR
}
22793
OPEN
CLOSED
Continued on next page
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