METAL WORK 37D3112000 e.Direct Drive for Direct Current Motors Instruction Manual

METAL WORK 37D3112000 e.Direct Drive for Direct Current Motors

Product Information

The e.direct by Metal Work is a programmable drive for motors with various power supply options. It has a maximum voltage of 30VDC and a power supply of 150W. The device measures 110 x 121 x 36mm and weighs 160g. It has an IP20 protection rating and features various inputs and outputs, including digital inputs, digital outputs, and analog inputs. The device is compliant with the Low Voltage Directive 2006/95/EC and the EMC Directive 2004/108/EC, as amended.

Safety Precautions

• Qualified fitters specializing in programmable drives for motors and related problems should handle, install and use the e.direct by Metal Work.
• There is a risk of mechanical damage to people and objects due to the forces involved in the actuator.
• The device generates EMC noise, and it is recommended to take appropriate precautions to comply with the applicable standards (EN 61800-3).
• The e.direct by Metal Work must be handled, installed, and used by a qualified fitter specializing in programmable drives for motors and related problems.
• The use in safety components for safety functions (EN 60204-1) or with application methods that can entail a risk of damage when a circuit board fails is prohibited.
• The installation in machines or equipment subject to one or more EC directives, without having declared that they comply with these directives, is also prohibited.

EMC Precautions

• Proper shielding of control signal cables, motor, and power supply.
• Suitable grounding of component parts using cables as short and with the least inductance as possible.
• Using transformers with a metal shield between primary and secondary winding.
• Using appropriate mains filters, especially as close as possible to the electrical panel power input.
• The product described in this manual complies with the Low Voltage Directive 2006/95/EC and the EMC Directive 2004/108/EC, as amended.

Product Usage Instructions

• Before using the e.direct by Metal Work, it is important to read and understand the safety precautions provided in the user manual.
• The device has various inputs and outputs that can be connected to the motor and other electrical components.
• When connecting the device, ensure that the power supply is within the specified voltage range of 30VDC.
• The device has digital inputs, digital outputs, and analog inputs that can be used to control the motor’s rotation and movement.
• To comply with the applicable standards (EN 61800-3), it is essential to follow the EMC precautions provided in the user manual. Proper shielding of control signal cables, motor, and power supply, suitable grounding of component parts using cables as short and with the least inductance as possible, using transformers with a metal shield between primary and secondary winding, and using appropriate mains filters, especially as close as possible to the electrical panel power input.
• It is important to use qualified fitters specializing in programmable drives for motors and related problems to handle, install and use the e.direct by Metal Work.

ELECTROMAGNETIC INTERFERENCE
The part relating to the drive and the power supply devices (transformer, condenser, fuses, motor, rectifier bridge, and cables) contribute to generating EMC noise. In order to comply with the applicable standards (EN 61800-3), it is strictly recommended to adopt the following precautions

• proper shielding of control signal cables, motor, and power supply;
• suitable grounding of components parts, using cable as short and with the less inductance as possible;
• using transformers with a metal shield between primary and secondary winding. The use of auto-transformers for accident prevention or other purposes is not admitted.
• using appropriate mains filters, especially as close as possible to the electrical panel power input. The use of a double-cell filter (e.g. Schaffner FN660-10-06) is recommended.
• using clamp-on ferrites on the various cables, if deemed necessary.

MECHANICAL HAZARD
The mechanical forces at play in an actuator are of such an extent as to cause damage to property or injury to persons. The speed, acceleration, dimensions and positions of the axis are controlled by electronic systems (a combination of HW and SW tools), which, although of a high quality standard, may be subject to breakdowns and malfunctions.

INTRODUCTION

The e.direct drive for direct current motors can be used to control and drive a 24VDC geared motor. The PCB is enclosed in a DIN rail mounting plastic housing. When activating the CW and CCW inputs, the motor starts running clockwise or anticlockwise. Two digital sensor inputs are provided to stop motor rotation upon activation. The two stop signals are made available as outputs for connection to a PLC. During acceleration and braking, the drive prevents mechanical stress on the motor and excessive energy regeneration. Braking takes place dynamically, stopping rotation immediately to avoid unwanted extra travel. The running speed can be varied either locally via the multi-turn trimmer installed on the board, or remotely via the analog input, either intermittently or continuously. The board comes with two NPN Hall- sensor encoder inputs and 5VDC power supply, which are fed back on two 24VDC encoder outputs which adapt the signals coming from the Hall sensors to PLC 24VDC inputs type OPEN DRAIN – PNP. The maximum current to be supplied to the motor can range between 1A, 2A, 3.5A and 5A via two DIP-switch selectors.

N.B: A delayed, external fuse of a value appropriate to the set current must be provided in the system. An appropriate external mains filter must be placed on the power supply to avoid disturbances generated by the drive.

LOGIC BLOCKS

CONTROL BOARD LAYOUT
The plan below highlights the elements of interest to the user. It shows the numbering of the connectors, signal LED lights, and the setting dip-switch .

C1 – 4 POLES CONNECTOR

C2 – 3 POLES CONNECTOR

(open collector PNP – 24VDC)

3| O| 0VDC Limit switch

C3 – 3 POLES CONNECTOR

(open collector PNP – 24VDC)

3| O| 0VDC Limit switch

C4 – 2 POLES CONNECTOR

C5 – 3 POLES CONNECTOR

C6 – 10 POLES CONNECTOR

DIP-SWITCH

default = maximum value

With DIP SWITCH 3 set to ON, the speed adjustment is set via LOCAL TRIMMER TR1 (turn the slider using a small slotted screwdriver).  The trimmer is set by default to the maximum speed setting of 100%.

EXTERNAL ANALOG INPUT CONTROL

• 0-0.5 VDC, the motor is at standstill.
• 0.5-10 VDC the speed is adjusted from 0 to 100%.
• 10-10.5 VDC the speed remains at 100%.
• 10.5-11 VDC The motor is at a standstill and the drive signals an out-of-range analog output FAULT.

Motion trend

DIRECTION INPUTS
The motor starts by setting the CW and CCW inputs as shown in the table below.

Rotation stops upon activation of the limit swich – STOP CW

OFF| ON| Counter-clockwise motor direction **

Rotation stops upon activation of the limit switch – STOP CCW

ON| ON| No combination allowed ***

• If the CCW input is activated, the motor keeps turning in the CW direction.
• If the CW input is activated, the motor keeps turning in the CCW direction.
• If one or both of the direction inputs are active when the drive is switched on, the motor does not turn. Both CW and CCW must be OFF before activating any of them.

DIAGNOSTICS

DL1 (Red Led)

DIAGNOSTICS

| Description| FAULT OUT| Solution
---|---|---|---
OFF| Drive off| OFF| /
ON (Red)| Drive on, motor stopped| OFF| /
FLASHING

(Red)

| Drive on, motor running FLASH ON time = 0.5 sec OFF time = 0.5 sec| OFF| /
FLASHING

(Red)

| FAULT due to motor overtemperature or overvoltage (>30VDC) or undervoltage (<18VDC)

FLASH ON time = 0.2 sec

OFF time = 1 sec

| ON

(+24VDC)

| Reduce either the load applied or the duty cycle. Power the motor correctly.

Reset is automatic.

FLASHING

(Red)

| FAULT due to analog input out-of-range (over 10VDC)

FLASH ON time = two 62-msec start-ups OFF time = 1 sec

| ON

(+24VDC)

| Enter a correct analog input value. Reset is automatic.
FLASHING

(Red)

| FAULT due to motor overcurrent (motor I > 20A) FLASH time ON = 62 msec

OFF time = 62 msec

| ON

(+24VDC)

| Reduce either the load applied or the duty cycle. Set a suitable current value.

Resetting is done by deactivating the rotation control

and occurs 10 seconds after the event.

Locking alarms: when they are triggered, the motor stops; resetting is done by deactivating the rotation command after at least 10 seconds after the event.
Self-resetting alarms: when they are triggered, the motor stops; operation resets automatically 5 seconds after the cause of the alarm has been cleared. When an alarm occurs, the motor does not restart automatically after 25 restart attempts in an hour. In this case, switch the motor off and on again to restart it.

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