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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

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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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