SEW MOVITRAC LTE-B series, Руководство по эксплуатации

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Operating Instructions – MOVITRAC® LTE-B
8
Advanced parameters
Parameters
P-30 Terminal mode
restart function • Edge-r
• Auto-0
• Auto-1 to Auto-5
Auto-0 Defines the inverter behavior with reference to the
enable digital input and configures the automatic
restart function.
•
Edge-r : The inverter does not start after
switching-on or reset if binary input 1 remains
closed. The input must be closed
after switch-
ing on or resetting the inverter to start it.
• Auto-0 : The inverter starts automatically after
switching-on or reset if binary input 1 is closed.
• Auto-1 – Auto-5 : After switch-off with error
(trip), the inverter makes up to 5 attempts to
restart at intervals of 20 seconds. To reset the
counter, the inverter must be de-energized.
The number of attempted restarts is counted. If
the inverter does not start at the last attempt,
the inverter goes to error state and prompts the
user to manually reset the error.
P-31 Keypad mode
new start function 0 Minimum speed 1 If set to 0 or 1, you have to use the <Start> key.
If set to 2 or 3, the inverter is enabled once the
enable signal is present for the inverter hardware.
You can then change the speed using the keypad.
1 Most recently used speed
2 Minimum speed (auto run)
3 Most recent speed (auto run)
P-32 DC current hold-
ing function 0 – 25 s 0 s This function is used in fan applications. Its pur-
pose is to prevent the rotor from restarting subse-
quently caused by the air flow. At stop, the DC
current holding function is activated for the duration
defined in
P-32 after speed "0" has been reached.
The holding torque depends on the settings made
in
P-11 .
P-33 Flying start
function
1)
0 Off 0 Size 1 :
P-33 =1 activates the DC current holding function
when the inverter is enabled. With this setting, the
rotor is stopped completely before it is started
again. Duration and holding torque are defined with
P-32 and P-11 .
Size > 1 :
Parameter setting P-33 =1 starts the inverter from
the detected rotor speed. In this case, the inverter
starts with a brief delay.
1 On
P-34 Brake chopper
activation 0 Off 0 All braking resistors must be protected using exter-
nal protection devices.
1 Activated, with s/w protection
only for BWLT 100 002
2 Activated, for other BWxxxx
with external protection
Parameter Description Range Default Explanation
P-32
n
t
P
i
f
kVA
Hz
n