APPENDIX
– Open-Loop Adjustments
185
Secondly, decrease decel rate via
DECEL RATE x (A2) parameter and
observe performance
Overshooting Floor
If the car is overshooting the floor then until
resolved, try the following (in order):
o
Verify Mechanical Brake Timing
o
Decrease Leveling Speed
o
Increase Decel Jerk Out and Decel
Rates
o
Decrease Motor Mid Voltage
parameter
Note: if no performance change is
observed after any one step, set any
changed value(s) back to the original
value(s) before proceeding onto the next
step.
Verify Mechanical Brake Timing
The mechanical brake should be dropped
during the DC injection stop time (DC
STOP TIME (A1) parameter), see
“Mechanical Brake Timing at Stop”.
Decrease Leveling Speed
Decrease leveling speed and observe
performance
Note: practical minimum for leveling
speed is about 2.5 Hz.
Increase Decel Jerk Out and Decel Rates
Increase jerk rate via DECEL JERK
OUT x (A2) parameter and observe
performance
Secondly, increase decel rate via
DECEL RATE x (A2) parameter and
observe performance
Note: When increasing the Decel and
Jerk Rates watch for spotting or
stalling.
Decrease the Motor Mid Voltage Parameter
Decrease MOTOR MID VOLTS (A5)
parameter (decrease increments of 0.5
and observe performance)
Note: When decreasing the Motor Mid
Volts parameter, watch that the drive
does not start stalling (especially with
full-load)
Overshooting Floor only with Regen Load
If the car overshoots the floor only with a regen
load (i.e. empty-up) then:
Verify the car DOES NOT overshoot
with balanced car and empty-
down…if
it does refer to Overshooting Floor
section.
If only overshoots empty-up, increase
MOTOR MIN VOLTS (A5) in
increments of 0.1 V and observe
performance.
Note: if no performance change is
observed, set the Motor Min Volts
parameter to the original value.
Rollback at Stop
If rollback is observed at the stop, then until
resolved, try the following (in order):
1. Verify Mechanical Brake Timing
2. Decrease Decel Jerk Out Rate
3. Increase DC Injection Stop Level
Note: if no performance change is
observed after any one step, set any
changed value(s) back to the original
value(s) before proceeding onto the next
step.
Verify Mechanical Brake Timing
The mechanical brake should be dropped
during the DC injection stop time (DC
STOP TIME (A1) parameter), see
“Mechanical Brake Timing at Stop”.
Decrease Decel Jerk Out Rate
Decrease jerk rate via DECEL JERK
OUT x (A2) parameter and observe
performance.
Increase DC Injection Stop Level
Increase the DC STOP LEVEL (A1)
parameter in increments of 5% and
observe performance.
Measuring Stator Resistance Procedure
The stator resistance value can be measured
by:
Remove any two motor wires directly
at the terminals of the motor. Since
the stator resistance is low, the
resistance needs to be measured at
the motor terminals in order to avoid
the resistance of the motor wires
Connect the two meter leads together
and measure the resistance of the
meter leads in ohms (
meter
resistance
). Since the stator
resistance is low, the resistance of the
meter leads need to be taken into
account.
Содержание HPV 900 Series 2
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