Setpoint value ( pnln ) 45, Hold phase ( pnhn ) 45, Timed event out put(s) ( pn 1 to pn 16) 45 – Red Lion TSC User Manual
Page 47

Setpoint Value (PnLn)
The controller ramps to the Target Setpoint Value and then maintains the
Target Setpoint Value over the hold phase time. The setpoint value is
constrained to the setpoint limit values (SPLO & SPHI).
PnLn
-999 to 9999 degrees
Hold Phase (PnHn)
The controller maintains the target setpoint value constant during a hold phase
for a fixed period of time. The hold phase is expressed in tenths of minutes.
0.1 to 999.9 minutes
Holds times longer than 999.9 minutes are possible by joining two or more
hold phases. Hold phases are joined by setting the in-between ramp rate to 0.0,
which skips the ramp phase.
A hold phase time value of 0.0 minutes skips the hold phase. Although
Event Outputs assigned to that phase are updated. Two or more ramp phases
(staged ramps) may be joined together by setting the in-between hold phase
time to 0.0 minutes.
Timed Event Output(s) (Pn 1 to Pn 16)
The alarm channels can be independently configured to operate as an Alarm
Output or a Timed Event Output. The alarm(s) must be configured in the
Alarm Module (4-AL). If configured as an alarm, the output state assignments
are ignored.
Timed Event Outputs use AL1 and/or AL2 to signal or activate other
equipment during execution of a profile. The Timed Event Outputs are
updated at the start of each ramp and hold phase and remain defined for the
duration of that phase. Front panel annunciators AL1 or AL2 light, if the
Timed Event Output phase is programmed to activate the corresponding
output. The table lists the four assignment choices for each phase:
Mnemonic
Description
1F2F
Alarm 1 off, Alarm 2 off
1F2N
Alarm 1 off, Alarm 2 on
1N2F
Alarm 1 on, Alarm 2 off
1N2N
Alarm 1 on, Alarm 2 on
Each phase of the profile corresponds to an Event Output number. One of
the output state assignments is programmed to each profile phase. The table
lists the correspondence.
Timed Event
Output Number
Profile Phase
Mnemonic
Description
Pn 1
Pnr1
Ramp Rate 1
Pn 2
PnH1
Hold Time 1
Pn 3
Pnr2
Ramp Rate 2
Pn 4
PnH2
Hold Time 2
Pn 5
Pnr3
Ramp Rate 3
Pn 6
PnH3
Hold Time 3
Pn 7
Pnr4
Ramp Rate 4
Pn 8
PnH4
Hold Time 4
Pn 9
Pnr5
Ramp Rate 5
Pn 10
PnH5
Hold Time 5
Pn 11
Pnr6
Ramp Rate 6
Pn 12
PnH6
Hold Time 6
Pn 13
Pnr7
Ramp Rate 7
Pn 14
PnH7
Hold Time 7
Pn 15
Pnr8
Ramp Rate 8
Pn 16
PnH8
Hold Time 8
Note: Each Timed Event Output number can be programmed to one of the
output states (1F2F, 1F2N, 1N2F, or 1N2N).
If using the Timed Event Outputs for Profile #4, and the other profiles are
set for “Stop” operation, the unit will power-up with the outputs in an
indeterminate state. To define the Timed Event Outputs under this condition,
assign all of the Timed Event Outputs in Profile #4 to off.
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