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Summary of Contents for StepperOnline CL42T
- Page 1 User Manual CL42T(V4.1) Closed Loop Stepper Driver Revision 4.1 Record of Revisions Revision Date Description of Release 1.00 Aug, 2019 Initial Release 4.10 May,2023 Add connector P5 -tuning port and description...
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Page 2: Table Of Contents
CL42T(V4.1) Closed-Loop Stepper Driver Table of Content 1. Features...................................1 2. Specifications..................................1 2.1 Electrical Specifications............................1 2.2 Environment................................1 2.3 Mechanical Specifications............................ 2 3. Connections and LED Indication..........................3 3.1 P1 – Control and Digital Output Connections....................3 3.2 P2 - Encoder Signals Input Connector....................... 4 3.3 P3 - Motor Connector............................ -
Page 3: Features
CL42T(V4.1) Closed-Loop Stepper Driver 1. Features Input voltage 18-50VDC (recommended 24-48VDC) No loss of step, No tuning 500 KHz max pulse input frequency 16 microstep resolutions of 200-51,200 via DIP switches SW1 - SW4 4 output current settings of 0.8A, 1.4A, 2.1A and 2.8A via S1 rotating switch ... -
Page 4: Mechanical Specifications
It is recommended to mount the drive vertically to maximize heat dissipation. Mount a cooling fan nearby ifnecessary. If multiple CL42T(V4.1) drives are installed, it is suggested to keep a minimal 30mm (1.2 inches) between two of them. -
Page 5: Connections And Led Indication
CL42T(V4.1) Closed-Loop Stepper Driver 3. Connections and LED Indication A CL42T(V4.1) closed loop stepper drive has 5 connection blocks from P1 to P5 (see figure 2). Figure 2: CL42T(V4.1) connectors P1 – Control and Digital Output Connections The P1 connector in Figure 2 contains connections for control signals and 2 digital outputs. See the following table for details. -
Page 6: P2 - Encoder Signals Input Connector
The P5 connector in Figure 2 is a RS232 communication port for PC connection. Refer to the following pin definitions.CL42T has a tuning port with RS232 to modify the drive parameters; it is just used to modify parameter, not for equipment control because neither precision nor stability is sufficient. -
Page 7: Led Status Lights
5V 4. Power Supply Selection The CL42T(V4.1) can power medium and large size stepping motors (frame size from NEMA 8 to 17). To get good driving performances, it is important to select supply voltage and output current properly. Generally speaking, supply voltage determines the high speed performance of the motor, while output current determines the output torque of the driven motor (particularly at lower speed). -
Page 8: Switch Configurations
CL42T(V4.1) Closed-Loop Stepper Driver Higher supply voltage can increase motor torque at higher speeds (>300 RPM), thus helpful for avoiding losing steps.However, higher voltage may cause bigger motor vibration at lower speed, and it may also cause over- voltage protection or even drive damage. -
Page 9: Micro Step (Sw1-Sw4)
Pulse Filter Time Yes (10ms) No (1.5ms) CL42T(V4.1) has an advanced feature called Pulse Filter Time to make the input pulse from pulse generator (controller,PLC, etc.) S-curve acceleration, to improve motion smoothness and high-speed start frequency in manycircumstances. The Filter Time value must be set to the same for each CL42T(V4.1) in multi-axis applications 5.3 S3 - Selector Switch Configurations... -
Page 10: Typical Connection
CL42T(V4.1) Closed-Loop Stepper Driver 6. Typical Connection A complete closed loop stepper system should include a stepper motor with encoder, CL42T(V4.1) drive, powersupply and controller (pulse generator). A typical connection is as below. Figure 4: Typical connection Notes: (1) Pulse and direction inputs level 5V or 24V selected by selector switch S3. When it is 24 V, the S3 selection of 5V will damage the input photo-coupling. -
Page 11: Fault Output Connection
1KΩ resistor; If it is 5V, please set the S3 to 5V. 6.2 Fault Output Connection When over voltage or over current protection happens, CL42T(V4.1) red status LED light will blink and the impedancestate between ALM and COM- will change (from low to high or high to low depending on configuration) and can thus be detected. -
Page 12: Fault Protections & Troubleshooting
CL42T(V4.1) Closed-Loop Stepper Driver Figure 10: Sequence chart of control signals Remark: t1: ENA must be ahead of DIR by at least 200ms. Usually, ENA+ and ENA- are NC (not connected). See“Connector P1 Configurations” for more information. t2: DIR must be ahead of PUL effective edge by 2us to ensure correct direction;... - Page 13 CL42T(V4.1) Closed-Loop Stepper Driver Restart the power supply, if the drive is Fail to auto tuning still alarm, please contact after-sale a) Set SW6 to “ON” to make motor run in open loop mode, If alarm disappears, Position following 0.3S 0.2S it means encoder wiring error;...
- Page 14 CL42T(V4.1) Closed-Loop Stepper Driver Choose another power supply with lager power or increase the output current of Current setting is too small drive Motor stalls during Motor is undersized for the Choose another motor with higher acceleration application torque Acceleration is set too high...
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