Benezan Electronics
Hard- and software development
Breakout Board Installation Guide
Nicolas Benezan, Stauffenbergstr. 26, 72108 Rottenburg
Phone: +49 (0) 7457/946365 0 benezan-electronics.de
Page
Netbob1 installation.docx22.09.2020
RJ45
Pin No.
Wire colour
Output stage Signal
1
white-orange ENA+
2
orange
ENA-
3
white-green
PUL-
4
blue
DIR+
5
white-blue
DIR-
6
green
PUL+ and ALM+
7
white-brown
ALM and resistance
8
brown
Resistance (see picture on the right)
Please note that the signals ENA+/- and ALM+/- have negative logic, i.e. voltage at ENA+/- turns the controller off instead of on.
This can lead to dangerous conditions, because an interruption will result in an unintentional start of the drive. In addition, a cable
break or a power failure at the motor cannot be detected with the ALM signal, because the rest end (no voltage) means OK and
voltage at ALM means error and not vice versa.
Operation in this configuration is not permitted if unintentional starting of the drive could pose a danger to the operator with the
risk of serious injury
, which is practically always the case with machine tools.
Use at your own risk
- Benezan Electronics
declines all responsibility. Some drives support setting the polarity of the ENA and ALM signals using PC software. Nevertheless,
their use is
not safe
enough for personal protection.
Connection of industrial servos
The breakout board can also be operated together with industrial servos which support a position control mode with step/direction
signals, e.g. the Speedcube controllers from Benezan Electronics or the RS1A series from SanyoDenki. These controllers have a
separate connection for motor operating voltage and internal supply or have inputs for safe stop. This allows safe stopping of the
drives in case of emergency stop or open doors. With additional effort, a set-up mode (travel at reduced speed with open door) can
also be implemented. Adapter cables, circuit diagrams and support services for the adjustment are available on request and against
payment.
Relay outputs
The relay outputs 1 and 2 can be used to switch 230V consumers such as spindle motor, coolant pump or chip extractor. The
current consumption must not exceed 8A per relay, otherwise the load must be switched with an external contactor.
Instead of 230V~, 24V consumers can also be switched, such as contactors or pneumatic valves. However, 24V and 230V must
not be used together, as in this case the required insulation distances cannot be maintained. The voltage source is connected to
pins 1 and 2 of X4, the loads to pins 3+4 and 5+6.
If potential-free contacts are required instead, e.g. for the digital inputs of a frequency converter, relay 1 can be used as a make
contact between pin 1 and 3, relay 2 between pin 2 and 6. Here, too, it should be noted that mixed operation with 230V is not
permitted because of the insulation distance.
If more than two outputs are required for additional functions, the brake relay can also be used or an additional IO expansion
module can be installed.
Reference switch inputs
Up to 4 switches or sensors can be connected. If the 4th axis is not used or does not require a reference switch, a tool length sensor
can be connected here, for example.
Mechanical switches or inductive proximity switches of the PNP type can be used. If proximity switches are to be used, JP3
must be set to 24V (top) and the board must be powered with 24V. The sensors should be connected as follows: brown (+24V) to
terminal 1, 3, 5 or 7, blue to the ground connection of the power supply, black (signal) to terminal 2, 4, 6 or 8.
The inputs are high-active, i.e. the signal is logic 1 when the connected switch is closed, or when a voltage >8V is present at the
input. The signal is logic 0 when the input is de-energized or the switch is open. If required, all input signals can be inverted in the
software.
The switch inputs have a Schmitt trigger function and are interference suppressed with a low-pass filter, so that there is usually
no need to fear interference even with unshielded cables. The inputs are overvoltage tolerant up to +75V. Please note that the
switch inputs are not suitable for fast signals (>1kHz) with 5V level, for example TTL encoder signals.
