Invertek Drives OPT-2-ENCOD-IN User Manual page 2

MECHANICAL INSTALLATION
1) Option Module inserted into Optidrive
Option Module Port
2) DO NOT use undue force in inserting
the option module into the options port.
3) Ensure the option module is fitted
securely before powering on the
Optidrive.
4) Remove terminal block header from
option module prior to tightening
connections. Replace when wiring is
completed. Tighten to Torque setting
provided in Specifications.
Option Module Slot
Option Module
OPTION MODULE CONNECTION TERMINALS
Pin Function
1 A Channel (A)
2 A Channel Inverse (/A)
3 B Channel (B)
4 B Channel Inverse (/B)
5 +5V DC Output
6 0V Common
Connection Example – 5V TTL
Encoder
Note:
For a 24V HTL Encoder a 24V external supply must be connect (as shown).
LED A
(Green)
Connection Example – 24V HTL
Encoder
LED B
The encoder module has 2 LEDs – LED A (Green) and LED B (Red).
(Red)


The fault code is indicated on the drive display as noted above. For transient faults, the LED will
remain illuminated for 50ms to ensure that fast transient faults can be observed.
Parameter Settings
When operating with an encoder, the following parameter settings are required
as a minimum:

P1-09: Motor rated frequency (found on the motor nameplate).

P1-10: Motor rated speed (found on the motor nameplate).

P6-06: Encoder PPR value (enter value for the connected encoder).
Closed Loop Vector speed provides full torque holding capability at zero speed
and enhanced operation at frequencies below 1Hz. The drive, encoder module
and encoder should be connected according to the voltage rating of the encoder
as shown in the wiring diagrams.
Note: Encoder Vector Torque Control and Encoder V/F speed control operation
is detailed in the Optidrive P2 Encoder Speed control application guide.
The encoder cable should be an overall shielded type, with the shield bonded to
earth at both ends.
When commissioning, the Optidrive should firstly be commissioned in
Encoderless Vector Speed Control (P6-05 = 0), and a speed / polarity check
should then be made to ensure that the sign of the feedback signal matches that
of the speed reference in the drive. The steps below show the suggested
commissioning sequence, assuming the encoder is correctly connected to the
Optidrive.
1) Enter the following parameters from the motor nameplate:-

P1-07 – Motor Rated Voltage

P1-08 – Motor Rated Current

P1-09 – Motor Rated Frequency

P1-10 – Motor Rated Speed
2) To enable access to the advanced parameters required, set P1-14 = 201
3) Select Vector Speed Control Mode by setting P4-01 = 0
4) Carry out an Auto-tune by setting P4-02 = 1
5) Once the Auto-tune is completed, the Optidrive should be run in the forward
direction with a low speed reference (e.g. 2 – 5Hz). Ensure the motor operates
correctly and smoothly.
6) Check the Encoder Feedback value in P0-58. With the Optidrive running in
the forward direction, the value should be positive, and stable with variation of +
/ - 5% maximum. If the value in this parameter is positive, the encoder wiring is
correct. If the value is negative, the speed feedback is inverted. To correct this,
reverse the A and B signal channels from the encoder.
7) Varying the drive output speed should then result in the value of P0-58
changing to reflect the change of the actual motor speed. If this is not the case,
check the wiring of the whole system.
8) If the above check is passed, the feedback control function can be enabled by
setting P6-05 to 1.
An application note, detailing full use of the Encoder interface module, is
available from your local Invertek distributor.
ERROR CODE DEFINITIONS
Error Code Definitions
The following error codes are related to the encoder operation:
Code Description

Communication
loss

Speed feedback
error exceeds
level set in P6-07

Encoder
<60
 Encoder Channel
A Fault
 Encoder Channel
B Fault

Encoder
Channels A & B
Faults
LED STATUS INDICATION
LED A indicates power
LED B indicates a wiring fault condition.
OPERATION
COMMISSIONING
Solution
No communication between the encoder
module and the drive.
Please check the module is properly fitted
into the slot.
The estimated motor speed differs from
the measured motor speed.
Check encoder connection,
shielding, and values set in P6-07.
PPR The encoder used must have a PPR
value of at least 60.
Error normally caused by encoder wiring
error.
Check encoder wiring and commissioning
guidelines.
wire