Magnetek GPD 205, Техническое руководство

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C Co on ns stta an ntt S Stta allll P Prre ev ve en nttiio on n D Du urriin ng g Factory Setting: 0
n n 3 3 3 3 D De ec ce elle erra attiio on n
Setting Function
0 Stall prevention during deceleration enabled
1 Stall prevention during deceleration disabled
(braking resistor connected)
Stall prevention during deceleration
automatically adjusts the deceleration
rate while monitoring the DC bus
voltage to prevent overvoltage during
deceleration. This constant must be
set to “ 1 ” when connecting dynamic
braking (DB) resistor(s).
When the motor load is large or decel time is short, actual decel time may be longer
than the set value because of the stall prevention function.
C Co on ns stta an ntt S Stta allll P Prre ev ve en nttiio on n L Le ev ve ell Range: 30 - 200 (%)
n n 3 3 4 4
D Du urriin ng g A Ac cc ce elle erra attiio on n Factory Setting: 170
This constant determines the actual GPD 205 output current level during an
acceleration condition. Set in percent of GPD 205 rated output current (see
Appendix 1).
A setting of “ 200 ” disables
stall prevention during
acceleration. During
acceleration, if the output
current exceeds the value in
n
n 3 3 4 4 , acceleration stops and
frequency is maintained.
When the output current goes
below the value set in n
n 3 3 4 4 ,
acceleration resumes.
In the constant horsepower
region [actual output frequency ≥ max. voltage frequency (n
n 2 2 6 6 )], the stall
prevention level during acceleration is changed by the following formula:
Stall prevention level during = Stall prevention level during accel x Max. voltage frequency
accel (constant horsepower) Actual output frequency
42
t
t
MOTOR
CURRENT
OUTPUT
FREQ.
Constant
n34
setting
TIME
FREQUENCY
SET
DECEL
TIME
Controls the
deceleration
time needed to
prevent over-
voltage fault.
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