EM-243C is a full bridge DC-motor starter. It is designed to work with DC-motor in applications where some special functions are needed. Starter has adjustable acceleration and deceleration ramps, which make possible the smooth starts and stops. Adjustable current limit protects motor against overcurrent and it can also be used as an end-stop. This device has also two settable speeds, which are usefull in positioning applications. Control inputs FW and BW start the forward and backward run. STOP is for the motor shut-down but there are also available individual limit inputs for FW and BW directions. SPEED-2 input activates preset speed-2, but it can also be used as input for analog speed control signal 0-5V. FAULT terminal has at the same time input and output function, the pin is normally high, but is pulled down in overheat and conditionally also in current trip situation. If FAULT-line is pulled down externally it will cause a stop and prevent the new start. For example, it is possible to link fault pins of several units together and achieve a syncronous stop. There are 2 selectable control modes, contionuous and impulse. In continuous mode the motor runs as long as the control is active. In impulse mode a short comand starts the motor, and only a new impulse will change the status. The card has selectable input logics. Inputs are divided in two groups, control and limit -inputs. Groups can be individually set for NPN or PNP logic. The parameters are set with EM-236 interface unit. Operation of the controller and some of its functional values can also be monitored with EM-236 interface unit. In C-version program is possible to select 16kHz pwm frequency ( = silent ) but notice that current output capability is lower with 16kHz.
| TECHNICAL DATA |
|
|---|---|
| Supply voltage (nominal) | 12-48V |
| Supply voltage (limits) | 10-58V |
| Start-up voltage | 9V |
| Shutdown voltage | 8V |
| Idle current (typ.) | 15mA |
| Motor current max. (2kHz PWM) | 100% PWM: 50A |
| 20-99% PWM: 35A | |
| Peak (5s): 100A | |
| Motor current max. (16kHz PWM) | 100% PWM: 40A |
| 20-99% PWM: 20A | |
| Peak (5s): 60A | |
| Current limit adjustable | 1-100A |
| NOTICE! | During start ramp, current limit is boosted by 50% |
| Overheat limit | 100°C |
| Start and stop ramp | Adjustable 0-5s |
| PWM frequency | 2kHz or 16kHz |
| Speed input scale (speed-2) | 0-5V or 0-10V = 0-100% PWM |
| I-limit input scale (stop) | 0-4V = 0-100A |
| Input control logic | High = 4-30V, Low = 0-1V |
| Control input impedance | Typ. 10kΩ |
| Control input response time | Typ. 5ms |
| Fault output | NPN open collector, max. 40V / 1A |
| Fault input active | Uin < 1V (NPN) |
| Fan output | Switches on at 55°C, off at 50°C (only PCB Cv.2 or later) |
| Fan output NPN | Max. 40V, 2A |
| Brake load output | Max. 60V, 5A |
| Vout lim output | Max. 25V, 15mA |
| Motor and supply connectors | 2.5mm |
| Control connectors | 1mm |
| Dimensions | 107 × 72 × 40mm |
| Dimensions (DIN-rail base) | 110 × 80 × 55mm |
| CE certification | Tested for industrial environment (EMC) |
| Operating ambient temperature (Ta) | -40...60°C |
| Weight | 190g |
APPLICATION NOTES
