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21 ramp-function generator – Siemens 440 User Manual

Page 131

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Issue 01/06

Parameter Description

MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0

131

P1113[3] BI:

Reverse

Min: 0:0

CStat:

CT

Datatype: U32 Unit:

-

Def:

722:1

P-Group: COMMANDS

Active: first confirm

QuickComm.: No

Max: 4000:0

Defines source of reverse command.

Index:

P1113[0] : 1st. Command data set (CDS)
P1113[1] : 2nd. Command data set (CDS)
P1113[2] : 3rd. Command data set (CDS)

Common Settings:

722.0 = Digital input 1 (requires P0701 to be set to 99, BICO)
722.1 = Digital input 2 (requires P0702 to be set to 99, BICO)
722.2 = Digital input 3 (requires P0703 to be set to 99, BICO)
722.3 = Digital input 4 (requires P0704 to be set to 99, BICO)
722.4 = Digital input 5 (requires P0705 to be set to 99, BICO)
722.5 = Digital input 6 (requires P0706 to be set to 99, BICO)
19.B = Reverse via BOP

Dependency:

Active only when P0719 < 10. See parameter P0719 (Selection of command/setpoint source).

r1114

CO: Freq. setp. after dir. ctrl.

Min: -

Datatype: Float Unit:

Hz

Def:

-

P-Group: SETPOINT

Max: -

Displays setpoint frequency after change of direction.

r1119

CO: Freq. setpoint before RFG

Min: -

Datatype: Float Unit:

Hz

Def:

-

P-Group: SETPOINT

Max: -

Displays output frequency after modification by other functions, e.g.:
-

P1110 BI: Inhibit neg. freq. setpoint,

-

P1091 - P1094 skip frequencies,

-

P1080 Min. frequency,

-

P1082 Max. frequency,

- limitations,
- etc.

3.21 Ramp-function

generator

P1120[3] Ramp-up

time

Min: 0.00

CStat:

CUT

Datatype: Float Unit:

s

Def:

10.00

P-Group: SETPOINT

Active: first confirm

QuickComm.: Yes Max: 650.00

Time taken for motor to accelerate from standstill up to maximum motor frequency (P1082) when no
rounding is used.

f (Hz)

t (s)

f max

(P1082)

P1120

t

up

P1120

P1082

f

f

t

1

2

up

=

f

2

f

1


Setting the ramp-up time too short can cause the inverter to trip (overcurrent).

Index:

P1120[0] : 1st. Drive data set (DDS)
P1120[1] : 2nd. Drive data set (DDS)
P1120[2] : 3rd. Drive data set (DDS)

Note:

If an external frequency setpoint with set ramp rates is used (e.g. from a PLC). The best way to achieve
optimum drive performance is to set ramp times in P1120 and P1121 slightly shorter than those of the PLC.

Notice:

Ramp times will be used as follows:
-

P1060 / P1061 : JOG mode is active

-

P1120 / P1121 : Normal mode (ON/OFF) is active

-

P1060 / P1061 : Normal mode (ON/OFF) and P1124 is active

Level

3

Level

3

Level

3

Level

1