Parameter Description

Issue 01/06

P2257

Ramp-up time for PID setpoint

 

Min:

0.00

 

CStat:

CUT

Datatype: Float

Unit: s

Def:

1.00

 

P-Group:

TECH

Active: Immediately

QuickComm.: No

Max:

650.00

Sets the ramp-up time for the PID setpoint.

PID Setpoint (%)

100% x2

x1

 

 

 

 

 

0

t12

t (s)

t12 =

x2 x1

P2257

 

P2257

 

 

100%

 

Dependency:

P2200 = 1 (PID control is enabled) disables normal ramp-up time (P1120).

PID ramp time effective only on PID setpoint and only active

-when PID setpoint is changed or

-when RUN command is given.

Level

2

Notice:

Setting the ramp-up time too short may cause the inverter to trip, on overcurrent for example.

P2258

Ramp-down time for PID setpoint

 

Min:

0.00

 

CStat:

CUT

Datatype: Float

Unit: s

Def:

1.00

 

P-Group:

TECH

Active: Immediately

QuickComm.: No

Max:

650.00

Sets ramp-down time for PID setpoint.

Level

2

PID Setpoint (%)

100 %

 

 

x2

 

 

x1

 

 

0

t21

t (s)

t21 =

 

P2258

 

x1 x2

100%

P2258

Dependency:

-P2200 = 1 (PID control is enabled) disables normal ramp-up time (P1120).

-PID setpoint ramp effective only on PID setpoint changes.

-P1121 (ramp-down time) and P1135 (OFF3 ramp-down time) define the ramp times used after OFF1 and OFF3 respectively.

Notice:

Setting the ramp-down time too short can cause the inverter to trip on overvoltage (F0002) / overcurrent (F0001).

r2260

CO: PID setpoint after PID-RFG

 

Min:

-

Level

 

Datatype: Float

Unit: %

Def:

-

2

 

 

 

P-Group: TECH

 

Max:

-

 

Displays total active PID setpoint after PID-RFG in [%].

Note:

r2260 = 100 % corresponds to 4000 hex

234

MICROMASTER 440 Parameter List

6SE6400-5BB00-0BP0

Page 234
Image 234
Siemens 440 manual P2257 Ramp-up time for PID setpoint, P2258 Ramp-down time for PID setpoint, 234