18
3 Installation
3.3 Connector pin assignment
Analog input (analog input, analog GND = AGND)
The analog input is executed as a differential input. The analog GND should be connected to the
power supply GND. This prevents the voltage drop in the supply cable from affecting the target
velocity value.
The analog input has various uses, depending on the configuration:
Presetting of target velocity value via analog voltage
Presetting of target velocity value via PWM signal
Current limitation value via analog voltage
Presetting of target position via analog voltage
Digital input for reference and limit switches
Connection for an external encoder (Analog input to GND: Channel A / Analog GND to GND:
Channel B) in gearing or BL encoder mode.
RS232 connections
The RS232 wiring is established via the connections RxD, TxD and the supply GND. The integrated
RS232 interface allows direct connection with a PC with use of a null modem cable, in which the
transmit cable (TxD) and the receive cable (RxD) are crossed.
Error output
The error output is characterised by the following characteristics:
Switch that switches to GND (Open Collector)
Output resistor in open state (High Level): 100 k
The switch is open in the event of error (High Level)
Output current limited to approx. 30 mA, voltage in open state must not exceed the power supply
(maximum UB)
Short-circuit proof
The error output is activated in the following situations:
Current limitation active
Over-voltage controller active (power supply over 32 V)
Power stage switched off due to excessive temperature
The error output connection can also be reconfigured for other functions:
Pulse output (only MCBL, 3564…B CS)
Digital output
Limit switch input
Rotational direction input
