Invertek Drives OPT-2-ENCOD-IN OPTIDRIVE Encoder Interface User Guide

: June 12, 2024
: Invertek Drives

Invertek Drives OPT-2-ENCOD-IN OPTIDRIVE Encoder Interface

Invertek Drives OPT-2-ENCOD-IN OPTIDRIVE Encoder Interface-
product

Product Information: OPTIDRIVE Encoder Interface

The OPTIDRIVE Encoder Interface is an option module designed for use with Optidrive P2 and Optidrive Elevator drives. It provides LED status indication for easy monitoring and is compatible with various encoder types.

LED Status Indication

The encoder module has 2 LEDs – LED A (Green) and LED B (Red).

LED A (Green): Indicates the status of the encoder operation.
LED B (Red): Indicates fault codes related to the encoder operation.

The fault code is indicated on the drive display. Please see Error Code Deﬁ nitions. For transient faults, the LED will remain illuminated for 50ms to notify a fault on the module.

Error Code Deﬁnitions

The following error codes are related to the encoder operation:

Compatibility

The OPTIDRIVE Encoder Interface is compatible with the following product ranges:

Optidrive P2 (ODP-2-…. Drives)
Optidrive Elevator (ODL-2-…. Drives)

Model Code
OPT-2-ENCOD-IN (5 Volt TTL Version)
OPT-2-ENCHT (8 – 30 Volt HTL Version)

Compatible Encoder Types
TTL Version : 5V TTL – A & B Channel with Compliment
HTL Version 24V HTL – A & B Channel with Compliment

Note: +24V HTL encoder requires external supply voltage

Specifications

Power Supply Output: 5V DC @ 200mA Max
Maximum Input Frequency: 500kHz
Environmental: 0°C – +50°C
Terminal Torque: 0.5Nm (4.5 Ib-in)

Error Code Definitions

The OPTIDRIVE Encoder Interface may display error codes related to the encoder operation. The fault code is indicated on the drive display. Please refer to the Error Code Definitions section in the user manual for more information.

Product Usage Instructions

Mechanical Installation

Follow these steps for mechanical installation:

Insert the Option Module into the Optidrive Option Module Port. Refer to the diagram in the user manual for guidance.
Ensure that no undue force is used while inserting the option module into the port.
Make sure the option module is fitted securely before powering on the Optidrive.
Before tightening connections, remove the terminal block header from the option module. Replace it after wiring is completed.
Tighten the connections to the torque setting provided in the Specifications section.

Electrical Installation

Follow these steps for electrical installation:

Use an overall shielded twisted paired cable.
Connect the shield to Ground (PE) at both ends.
Do not connect the encoder cable shield to 0V of the drive or encoder module.
Maintain a minimum distance of 500mm.
Overall Shielded twisted paired cable to be used
Shield should be connected to Ground (PE) both Ends

Connection Examples

5V TTL Encoder – OPT-2-ENCOD-IN Invertek Drives OPT-2-ENCOD-IN OPTIDRIVE
Encoder Interface-fig-7

24V HTL Encoder – OPT-2-ENCHT Invertek Drives OPT-2-ENCOD-IN OPTIDRIVE
Encoder Interface-fig-8

Alternatively (to External supply) the drives on-board 24V supply can be used (T1 (24V) and T7 (0V)) – Ensure total current consumption from T1 does not exceed 100mA.
NOTE 0V of encoder must also be connected to drive 0V (T7).
NOTE Do not connect the encoder cable shield to 0V of the drive or encoder module.

Refer to the user manual for connection examples and follow these notes:

Ensure that the encoder cable shield is not connected to 0V of the drive or encoder module.
The 0V of the encoder must be connected to drive 0V (T7).

Operation and Commissioning

When commissioning, follow these steps:

Commission the Optidrive in Encoderless Vector Speed Control (P6-05 = 0) initially.
Perform a speed and polarity check to ensure that the feedback signal matches the speed reference in the drive.

Compliance

Hereby, Invertek Drives Ltd declares that the Optidrive Encoder Interface. Model Code: OPT-2-ENCOD-IN and OPT-2-ENCHT is in compliance with Directive 2014/30/EU, 2014/35/EU, 2011/65/EU The EU declaration of conformity is available on request from your Invertek Drives Sales Partner.

Option Module Connections

Invertek Drives OPT-2-ENCOD-IN OPTIDRIVE
Encoder Interface-fig-9

Operation

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. The encoder cable should be an overall shielded type, with the shield bonded to earth at both ends.

Commissioning

When commissioning, the Optidrive should firstly be commissioned in Encoder less 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.

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
To enable access to the advanced parameters required, set P1-14 = 201
Select Vector Speed Control Mode by setting P4-01 = 0
Carry out an Auto-tune by setting P4-02 = 1
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.
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.
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.
If the above check is passed, the feedback control function can be enabled by setting P6-05 to 1.