Nidec LEROY-SOMER Powerdrive FX, Commissioning Manual

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QUICK SETUP MODE
Commissioning manual Powerdrive MD2/FX
4617 en - 2017.09 / e
4.2.3 - Speeds and ramps
Spd.01
: Maximum reference clamp
• Before setting the maximum limit, check that the
motor and the driven machine can withstand it.
Maximum speed in both directions of rotation.
Spd.02 : Minimum reference clamp
In unipolar mode, defines the minimum speed (inactive in
bipolar mode).
CAUTION:
• This parameter is inactive during jog operation.
• If the value of
Spd.01 is lower than that of Spd.02 ,
the value of Spd.02 is automatically changed to the new
value of
Spd.01.
Spd.03
: Reference selector
Terminal inputs (#):
Selection of the speed reference on differential analog input 1
or 2 via digital input DI3
.
Analog input 1:
The speed reference comes from differential analog input 1
(AI1+ and AI1- terminals).
Analog input 2:
The speed reference comes from differential analog input 2
(AI2+ and AI2- terminals).
Preset reference:
Selection of the speed reference comes from preset reference
RP1 or RP2 via digital input DI2 (set Spd.04 for RP1 or
Spd.05 for RP2).
Keypad:
The speed reference comes from the parameter-setting
interface (see section 2.2.4).
Spd.04 : Preset ref. 1
Used to define preset reference Pr1.
Spd.05
: Preset ref. 2
Used to define preset reference Pr2.
Spd.06
: Acceleration rate 1
Sets the time for acceleration from 0 to 1000 rpm.
Spd.06 =
t(s) x 1000 rpm
(N2 - N1) rpm
t(s) x 1000 rpm
(N2 - N1) rpm
Spd.07 : Deceleration rate 1
Sets the time for deceleration from 1000 rpm to 0.
Spd.07 =
t(s) x 1000 rpm
(N2 - N1) rpm
t(s) x 1000 rpm
(N2 - N1) rpm
Spd.08 : Deceleration ramp mode select
In factory-setting configuration, this parameter is not
relevant for the POWERDRIVE FX .
Fixed ramp:
Deceleration ramp imposed. If the deceleration ramp which has
been set is too fast in relation to the inertia of the load, the DC bus
voltage exceeds its maximum value («T» rating: 710 V; «TH»
rating: 1100 V) and the drive trips on «DC bus overvoltage».
CAUTION:
Select « Fixed ramp» mode when a braking resistor is
being used.
Automatic ramp (#):
Standard deceleration ramp with automatic extension of the
ramp time in order to avoid causing a drive DC bus overvoltage
trip («T» rating: 710 V; «TH» rating: 1100 V).
Automatic ramp +:
The drive allows the motor voltage to be increased to up to 1.2
times the rated voltage set in Mtr.04 (motor rated voltage), to
avoid reaching the maximum DC bus voltage threshold («T»
rating: 710 V; «TH» rating: 1100 V). However, if this is not
sufficient, the standard deceleration ramp time is extended, to
avoid causing a drive DC bus overvoltage trip.
For the same amount of energy, this mode enables faster
deceleration than «Automatic ramp» mode.
Fixed ramp +:
Same as «Automatic ramp +» mode, but the ramp is imposed.
If the configured ramp is too fast, the drive trips on DC bus
overvoltage.
CAUTION:
In «Automatic ramp +» and «Fixed ramp +» modes, the
motor must be capable of withstanding the additional
losses relating to the increase in voltage at its terminals.
N (min-1)
1000
N2
N1
0
Value of
Spd.06
t
t (s)
0
Value of
Spd.07
t
t (s)
N (rpm)
1000
N2
N1