EM-A41 is front end card for DC motor drivers. It can be
used when needed low idle current, main switch or emerg.
circuit The one most important feature of this card is the
suitability for capacitive loads i.e many electronic devices
The capacitive load is normally poison for relay contacts,
because it generates high inrush current which eats relay
contacts. In this device the pilot circuit charging the
capacitances before relay switch on and this way reduces
inrush current markable. Also this device reduces current
surge when system power switch on. The Emergency
shutdown has made with hardware circuit and it has
highest priority. The device has also monitor circuit for
own relay to detect possible relay stuck. Device activates
with wake up lines BW or FW and it returns to sleep mode
in 30seconds if this lines are not active.
| TECHNICAL DATA | |
|---|---|
| Supply Voltage | 10–35 V |
| Motor Current (Continuous) | Max. 30 A (Ta < 50 °C) |
| Motor Current (Peak) | Max. 40 A (10 s) |
| Voltage Drop | 0.2 V at 30 A |
| Idle Current | 0.7 mA (in sleep mode) |
| Switch On Time | 50 ms |
| Switch Off Time | 5 ms |
| Sleep Mode | 30 s after last command |
| Recommended Emergency Switch | Min. 1 A (N.C.) |
| Wake-Up Voltage | 4–35 V to BW or FW lines |
| Wake-Up Line Impedance | 47 kΩ |
| Fault Output | NPN, max. 50 mA, max. 30 V |
| Connectors (Supply) | 6 mm² |
| Connectors (Control) | 1.5 mm² |
| EMC Compliance | EN 50081-2 & EN 50082-2 (industrial) |
| Weight | 55 g |
| Operating Temperature (Ta) | -40…60 °C |
