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70 Quantum MP User Guide
www.emersonct.com Issue: A4
SP03 (Pr 0.63, 3.12) operates in the feed-forward path of the speed-
control loop in the drive. See Figure 11-3 on page 104 for a schematic of
the speed controller. For information on setting up the speed controller
gains, refer to Chapter 8 Optimization on page 78.
6.1.6 Serial interface
* only applicable to Modbus RTU mode
This parameter can be changed via the drive keypad, via a Solutions
Module or via the comms interface itself. If it is changed via the comms
interface, the response to the command uses the original baud rate. The
master should wait at least 20 ms before send a new message using the
new baud rate.
Used to define the unique address for the drive for the serial interface.
The drive is always a slave.
Modbus RTU
When the Modbus RTU protocol is used addresses between 0 and 247
are permitted. Address 0 is used to globally address all slaves, and so
this address should not be set in this parameter
ANSI
When the ANSI protocol is used the first digit is the group and the
second digit is the address within a group. The maximum permitted
group number is 9 and the maximum permitted address within a group is
9. Therefore, Si02 (Pr 0.67, 11.23) is limited to 99 in this mode. The
value 00 is used to globally address all slaves on the system, and x0 is
used to address all slaves of group x, therefore these addresses should
not be set in this parameter.
6.1.7 Speed feedback
0, drv: Drive encoder
The position feedback from the encoder connected to the drive itself
is used to derive the speed feedback for the speed controller and to
calculate the motor rotor flux position.
1, Slot1: Solutions Module in slot 1
The position feedback from the Solutions Module in Solutions
Module slot 1 is used to derive the speed feedback for the speed
controller and to calculate the motor rotor flux position. If a position
feedback category Solutions Module is not installed in slot 1 the
drive produces an EnC9 trip.
2, Slot2: Solutions Module in slot 2
3, Slot3: Solutions Module in slot 3
4, tACH: Tachometer
5, ESt.SPEED: Estimated speed
Defines the rating of the tachometer installed to the motor. This
parameter should be set slightly above or below the nominal value if the
user wishes to trim out the tolerance build ups in the feedback
electronics.
The input electronics for the tachometer input can be configured in 3
ways.
Provided the tachometer voltage rating parameter for the tachometer is
correct this parameter shows the tachometer speed in rpm.
When Ab, Fd, Fr are used the equivalent number of encoder lines per
revolution must be set-up correctly in Fb05 (Pr 0.75, 3.34) to give the
correct speed and position feedback. This is particularly important if the
encoder is selected for speed feedback with Fb01 (Pr 0.71, 3.26). The
equivalent number of encoder lines per revolution (ELPR) is defined as
follows.:
The incremental (A/B) signal frequency should not exceed 500k Hz. If
Fb05 is changed the encoder is re-initialized.
SP03
{0.63, 3.12}
(Kd1) Speed controller differential feedback gains
RW Uni US
0.00000 to 0.65535
(1/s / (rad/s))
0.00000
Si01
{0.61, 11.25}
Serial comms baud rate
RW Txt US
300 (0), 600 (1), 1200 (2),
2400 (3), 4800 (4), 9600 (5),
19200 (6), 38400 (7),
57600 (8)*, 115200 (9)*
19200 (6)
Si02
{0.67, 11.23}
Serial comms address
RW Uni US
0 to 247
1
Fb01
{0.71, 3.26}
Speed feedback selector
RW Txt US
drv (0), Slot1 (1), Slot2 (2),
Slot3 (3), tACH (4), Est
SPEED (5)
Est SPEED (5)
Fb02
{0.72, 3.51}
Tachometer voltage rating
RW Uni US
0 to 300.00 V/1000 rpm
Eur: 60.00, USA: 50.00
Fb03
{0.73, 3.53}
Tachometer input mode
RW Txt US
DC (0), DC Filt (1), AC (2)
DC (0)
Value Text Action
0DC
DC tachometer
1DC Filt
DC tachometer with input filter
2AC
AC tachometer
Fb04
{0.74, 3.52}
Tachometer speed feedback
RO Bi FI NC PT
±SPEED_MAX rpm
Fb05
{0.75, 3.34}
Drive encoder lines per revolution
RW Uni US
1 to 50,000
1,024
Position feedback device ELPR
Ab number of lines per revolution
Fd, Fr number of lines per revolution / 2
Fb06
{0.76, 3.36}
Drive encoder supply voltage
RW Txt US
5V (0), 8V (1), 15V (2), 24V (3)
5V (0)
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