AF6ZP0CA – COMBIAC0 & ACE0 2uC – User Manual Page – 31/155
4
The shunt resistor for overcurrent protection is shared among EV1, EV2, EV3,
EV4 and EV5 output. The overcurrent threshold is fixed by hardware to 9 A.
U
The maximum total continuous current when outputs EV1, EV2, EV3, EV4,
and EV5 are active at the same time is 3 A. The maximum total peak current
is 9 A.
U
When driving inductive loads on PWM Open drain outputs there must
always be a path for the current to the freewheeling diodes. Do not connect
any switch or fuse in series with the diode.
Connector position
A8, A9, A11, A23, A24, A26, A33, A34.
U
To protect the motor controller from overvoltage at inductive load, internal
free-wheeling diodes are mounted to the A3 pin.
U
Please ensure that inductive loads are connected such that the path for the
free-wheeling diode is always intact, or use an external free-wheeling diode
if this is not possible.
U
Use of brushless fan or other loads with built-in capacitor can give high
inrush current when turn ON which will give an Open Drain over current
trip. The inrush current must be below the open-drain peak current.
4.4.9 High-side driver
For 24 V versions, it is also available a high-side switch for critical functions
providing redundancy to turn OFF the EB.
If the open drain EB output is short circuited, it is possible to turn OFF the High
side switch to disconnect load.
The High side switch has maximum output current 3 A. The high side switch
(smart driver) has only ON/OFF control and it is present only on 24 V versions.
Protection
Internal hardware short circuit protection.
Built-in diagnostics:
- Shorted driver
- Open driver
Refer to section 10 for more detailed description.
To Next Page
Loading...
Need help?
General
