53
SPX advanced – description of parameters
SPX ADVANCED APPLICATION MANUAL
SVCH0203—October 2017 www.eaton.com
Code
ID
Parameter
Notes
P1.2.7.9
1239
Inching reference 1 “Inching Ref 1”
P1.2.7.10
1240
Inching reference 2 “Inching Ref 2”
These parameters define the reference for the inching function. The references are
bidirectional and the reverse command does not affect the direction of the inching
reference. Other parameters for inching function
•
Digital input selection: Enable Inching
•
Digital input selection: Inching 1
•
Digital input selection: Inching 2
•
Parameter: Inching Ramp
P1.2.7.11
1252
Speed step “speed step”
9000xDrive parameter to help adjusting the speed controller (see 9000xDrive Tools:
Step Response). With this tool you can give step to speed reference after ramp control.
5.2.2.1 Inching function
Inching function will start the drive to reference without
additional start command regardless of control place.
Inching function requires enabling from digital input before
command is accepted. Inching is also disabled if there is
start command active from active control place.
5.2.3 Power reference
The Power reference mode allows the motor to operate at
constant power while speed and torque are changing giving
steady load for the generators in changing conditions.
This also gives a fast response for thrusters as torque is
increased rapidly after increase of power reference thus
making speed of the thrusters to speed up fast to new
reference.
Pure speed control where ramp times are tuned slowly to
limit fast power changes on higher speeds makes response
slow especially when starting from zero speed where
thrusters do not create thrust.
The change between power reference mode and speed
controller mode is made by changing motor control modes
between speed and torque control.
otee:
N
Do not change between open loop and closed loop
control modes while the drive is run state.
•
P1.8.1 Motor Control Mode; Speed control modes
•
P1.8.2 Motor Control Mode 2; Torque control modes
•
DI Motor Control mode 1/2; Selection between speed and power
control mode
•
P1.2.9.1 Torque reference select “10/Power Ref”
In power reference mode the drive is operating in torque
control mode. Therefore, the torque reference selector needs
to be set to value 10 (Power reference) where given power
reference is converted to torque reference for the motor
control. “See Figure below”.
Power Reference
Power_Reference_Final
Power Ref. Sel
K
IN 0
IN 1
IN 2
IN 3
IN 4
IN 5
IN 6
IN 7
IN 8
IN 9
FieldBusReference
Keypad Referece
Analogue Input 1
Analogue Input 2
Analogue Input 3
Analogue Input 4
Al1 Joystick
Al2 Joustck
V
Power Reference
V
P
PowerRefInc.Rate
P
Power Ref. Max
P
MUX
X
X
MUL
STOP
SET
DATA
SPEED
IN
OUT
RAMP10
IN 1
IN 2
LT
F
F
F
F
F
F
F
F
