Nord Drivesystems NORDAC FLEX SK 200E Series User Manual page 144

NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
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DC brake current
P109
(DC brake current)
0 ... 250 % Current setting for the functions of DC current braking (P108 = 3) and combined braking (P108 =
5).
{ 100 }
The correct setting value depends on the mechanical load and the required deceleration time. A
higher setting brings large loads to a standstill more quickly.
The 100% setting relates to a current value as stored in the >Nominal current< parameter P203.
NOTE:
DC braking Not for PMSM motors!
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Time DC-brake on
P110
(DC braking time on)
0.00 ... 60.00 sec The time during which current selected in parameter P109 is applied to the motor for the function
"DC braking" selected in parameter P108 (P108 = 3).
{ 2.00 }
Depending on the relationship of the actual output frequency to the max. frequency (P105), the
>DC brake time< is shortened.
The time starts running with the removal of the enable and can be interrupted by fresh enabling.
DC braking Not for PMSM motors!
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P factor torque limit
P111
(P factor torque limit)
25 ... 400 % Directly affects the behaviour of the drive at torque limit. The basic setting of 100% is sufficient for
most drive tasks.
{ 100 }
If values are too high the drive tends to vibrate as it reaches the torque limit.
If values are too low, the programmed torque limit can be exceeded.
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Torque current limit
P112
(torque current limit)
25 ... 400 % / 401 With this parameter, a limit value for the torque-generating current can be set. This can prevent
mechanical overloading of the drive. It cannot provide any protection against mechanical
{ 401 }
blockages (movement to stops). A slipping clutch which acts as a safety device must be provided.
The torque current limit can also be set over an infinite range of settings using an analogue input.
The maximum setpoint (see 100% calibration, P403[-01] . .[-06]) the corresponds to the setting in
P112.
The limit value 20% of current torque cannot be undershot by a smaller analogue setpoint
(P400[-01] ... [-09] = 11 or 12). In contrast, in servo mode ((P300) = "1") as of firmware version V
1.3 a limiting value of 0% is possible (older firmware versions: min. 10%)!
401 = OFF means the switch-off of the torque current limit! This is also the basic setting for the FI.
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144
The amount of DC current (0 Hz) which the FI can supply is limited. For this value,
please refer to the table in Section 8.4.3 "Reduced overcurrent due to output
frequency", column: 0 Hz. In the basic setting this limiting value is about 110 %.
S P
S P
S P
S P
BU 0200 en-3118