EM-339A-48V-PLI is designed for driving two actuators in parallel. The drive is done as synchronized according actuators pulse feedback signal. The synchronization is achieved by adjusting actuator speed during drive. If the adjustment can not compensate the unbalance between actuators, the motors will be stopped. This way the mechanical stress and breakage can be avoided. Additively the driver includes current limit and power stage temperature limit.
Driver works with actuators that can offer pulse feedback signal. Pulses can be derived from Hall-sensors, reed or other kind of switches which generate 0 and 90° pulse chains. Driver can be set to read negative or positive pulses. Driver power stage operates with PWM (pulse width modulation), that enables the high efficiency and low losses of power stage.
The basic control is done with FORWARD- and BACKWARD-commands. These command can be done in continuous or in impulse control mode. In continuous mode the drive is done as long the command is on. In impulse mode the command impulses start and stop the driving. INPUT-1 and INPUT-2 are multifunction inputs and can be set to work several different function, as STOP, DISABLE, SPEED-2, EMERG. STOP and END LIMITS. Driver has also support for SAFETY-SWITCH with line monitoring, and also with parameter can be set SAFETY REVERSE reversing time. RES/HOME- input can be used for fault resetting or with long command starts HOME routine for resetting and balancing pulse counter. FAULT and BRAKE outputs can be also set to different function with parameters. EM339A version has also possibility for Bus control with Rs-485 Modbus RTU, and this has own separate guide.
The parameters are set with a handy interface unit EM-236. There is also possibility to use EmenTool Lite PC-sofware with EM-268 and EmenTool App with smartphones for parameter setting.
| Technical Data (PCB 339A v2, Prog. v1.3) | |
|---|---|
| Supply voltage | 24-48Vdc (20-58Vdc) |
| Undervoltage shutdown | 8V |
| Start-up voltage | 10V |
| Idle current | 15mA |
| Motor output currents | 2 x 8A cont. or 2 x 15A peak (25% duty, 2kHz) |
| 2 x 5A cont. or 2 x 10A peak (25% duty, 16kHz) | |
| PWM frequency | 2kHz / 16kHz |
| Current limit | 1-25A |
| Temperature limit | 120°C (power stage) |
| Ramp times | 0 - 2s |
| Pulse input frequency | Max. 700Hz/input channel |
| Pulse inputs pull-up/down | 10kΩ |
| Control inputs | 0-1V = OFF / 4-30V = ON |
| Control input impedances | 47kΩ |
| Fault output | Pull down max. 100mA (max. 30V) |
| Brake output | Pull down max. 2A |
| Brake resistor (recommended) | 33-47Ω, 20W |
| Auxiliary voltage output 1 | 5V, max. 20mA |
| Auxiliary voltage output 2 | 22V, max. 100mA |
| Bus | RS-485, half duplex, 9600bps |
| Dimensions | 78 x 73 x 25mm |
| Operating temperature range | -20 to 60°C |
| Weight of card | 110g |
| CE Electromagnetic Compatibility | EN-55022B and EN 61000-6-2/-4-2...6 |
