ABB OTAC-01 User Manual Download Page 17

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Diagnostics

In case of a fault or alarm signal, check for and correct:

Note:

The validity of the encoder signal is also checked during the

ID-run. See parameter 9910

MOTOR

RUN

. If the drive detects an

encoder problem during the ID-run, the drive provides an alarm.
Parameter 5003

FAULT

ENABLE

controls the drive’s fault/alarm response

to encoder errors only after the ID-run is completed.

Code

Name In

Panel

Description and Recommended Corrective Action

ENCODER

ERR

The drive is not detecting a valid encoder signal. Check for
and correct:

• Encoder presence and proper connection (reverse wired,

loose connection, or short circuit).

• Voltage logic levels are outside of the specified range.

• Pulse Encoder Interface Module, OTAC-01, presence and

proper connection to the ACS550.

• Wrong value entered in parameter 5001

PULSE

. A

wrong value will only be detected if the error is such that
the calculated slip is greater than 4 times the rated slip of
the motor.

• Encoder is not being used, but parameter 5002

ENCODER

ENABLE

= 1 (

ENABLED

)

2024

ENCODER

ERROR

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]

Summary of Contents for OTAC-01

Page 1: ...DriveIT Low Voltage AC Drives User s Manual Pulse Encoder Interface Module OTAC 01 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 2: ...plied regardless of motor operation WARNING There can be dangerous voltages inside the drive from external control circuits even when the drive mains power is shut off Exercise appropriate care when working on the unit Neglecting these instructions can cause physical injury or death Use of Warnings and Notes There are two types of safety instructions throughout this manual Notes draw attention to ...

Page 3: ...able of Contents 3 Installation 4 Preparing for Installation 4 Installing the Module 5 Start Up 13 Configuration 13 Diagnostics 16 Diagnostic LED 16 Fault Warning 16 Technical Data 18 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 4: ...if accurate speed or position angle feedback from the motor shaft is required Module Layout Compatibility The OTAC 01 module is compatible with all ACS550 drives To confirm compatibility with a particular pulse encoder compare the pulse encoders requirements to the Specifications on page 19 Green LED Warning Sticker A B Z Pass SCR Through X0061 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr co...

Page 5: ...he drive cover See instructions in the drive User s Manual 3 Insert the OTAC 01 module s plastic hooks into the front of the drive at SLOT 1 4 Carefully fit the connector at the other end of the module into the drive connector 5 Press until the retaining clip locks the module into position NOTE Signal and power connections to the drive are automatically made through a 6 pin connector 6 Connect the...

Page 6: ... cross sectional area 0 5 to 1 5 mm2 20 to 16 AWG Identification Description OTAC Encoder A 1 A A Max signal frequency 200 kHz Signal levels Logic 1 7 5 to 26 V Logic 0 0 8 V Input channels isolated from the logic and ground When the drive runs in the Forward direction channel A should lead channel B by 90 electrical Channel Z One pulse per revolution used in positioning applications only A 1 A A ...

Page 7: ...r encoder channel A 1 pulse leads channel B 2 pulse Refer to Encoder Output Types on page 9 to determine the encoder s output type For push pull types refer to the manufacturer s recommendation for connection either single ended or differential can be used 2 Refer to Wiring Diagrams on page 10 select the appropriate diagram and wire the encoder Loads Using the Drive s 24 VDC Supply mA Number of di...

Page 8: ...t from each other When rotated clockwise most encoders but not all have channel A 1 leading channel B 2 as illustrated below Determine the leading channel by referring to the encoder documentation or by measuring with an oscilloscope The encoder output channel that leads when the drive runs Forward should be connected to OTAC terminal A The output channel that trails should be connected to OTAC te...

Page 9: ...ction If not switch the A A or 1 1 connections Encoder Output Types The following diagrams identify the typical encoder output types Push pull Open collector Sinking Open emitter Sourcing VCC Encoder input power supply voltage OUT VCC OUT VCC OUT VCC Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 10: ...B 2 if present should be wired to OTAC terminals B and A respectively Differential connection Single ended connection Note 1 Connect the cable shield at the encoder housing if and only if the encoder is isolated from the motor and from ground A 1 B 2 1 1 0 0V VCC 2 2 0 Encoder Power Supply Encoder OTAC 01 Module SCR Note 1 PWR GND SCR A A B B Z Z 1 0 0V VCC 2 Encoder SCR Note 1 Encoder Power Suppl...

Page 11: ...or these connections Encoder A 1 and B 2 should be wired to OTAC terminals B and A respectively Note 1 Connect the cable shield at the encoder housing if and only if the encoder is isolated from the motor and from ground A 1 B 2 1 0 0V VCC 2 Encoder Power Supply Encoder SCR Note 1 OTAC 01 PWR GND SCR A A B B Z Z Module Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 12: ...umes normal pulse order in Forward rotation Pulse 1 leads as diagramed below For encoders with pulse B 2 leading change diagram for these connections Encoder A 1 and B 2 should be wired to OTAC terminals B and A respectively Note 1 Connect the cable shield at the encoder housing if and only if the encoder is isolated from the motor and from ground A 1 B 2 1 0 0V VCC 2 Encoder SCR Note 1 Encoder Po...

Page 13: ... pulse input if parameter 5010 Z PLS ENABLE 1 ENABLE Parameter 5011 POSITION RESET if parameter 5010 Z PLS ENABLE 2 DISABLE Any status change of parameter 5002 ENCODER ENABLE 0147 MECH REVS 32767 32767 1 0 A signed integer that counts full revolutions of the motor shaft The value Increments when parameter 0146 MECH ANGLE changes from 32767 to 0 Decrements when parameter 0146 MECH ANGLE changes fro...

Page 14: ...ed speed feedback and improved low speed torque accuracy 9904 2 VECTOR TORQ the encoder provides improved speed feedback and improved low speed torque accuracy 9904 3 SCALAR SPEED the encoder provides speed feedback This is not closed loop speed regulation However using parameter 2608 SLIP COMP RATIO and an encoder improves steady state speed accuracy 5003 ENCODER FAULT 1 2 1 1 9 Defines the drive...

Page 15: ...position feedback Parameters reset depends on the state of parameter 5010 Z PLS ENABLE 5010 ENABLE Reset applies only to parameter 0147 MECH REVS 5010 DISABLE Reset applies to parameters 0147 MECH REVS and 0146 MECH ANGLE Group 50 Encoder Code Description Range Resolution Default S Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 16: ...nerates an alarm 2024 ENCODER ERROR and operates as is if parameter 5002 ENCODER ENABLE 0 DISABLE that is speed feedback is derived from the internal motor model Step down this column If an item is TRUE look to the RIGHT for suggestions Corrective Action The configuration may have failed Cycle the power supply of the drive The module connection may be damaged Warning Dangerous voltages are present...

Page 17: ...ENCODER ERR The drive is not detecting a valid encoder signal Check for and correct Encoder presence and proper connection reverse wired loose connection or short circuit Voltage logic levels are outside of the specified range Pulse Encoder Interface Module OTAC 01 presence and proper connection to the ACS550 Wrong value entered in parameter 5001 PULSE NR A wrong value will only be detected if the...

Page 18: ...ditions The module is mounted inside the drive enclosure Refer to the drive s requirements Connectors Connectors on the module 6 pin connector Three 3 pin screw type non detachable terminal blocks that accept wire connectors up to 1 5 mm2 16 AWG Ground lead Ref mm in H 14 5 0 57 L 77 8 3 06 W 58 8 2 31 X0063 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 19: ...ly required to the pulse encoder All materials are UL approved Channel Specifications Channel specifications Differential or single ended Maximum input frequency 200 kHz Input voltage range 7 5 to 26 V measured at the OTAC module Nominal input impedance 660 ohm at 24 VDC Isolated from logic and ground Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

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