PDx-140-42-SE / TMCM-140-42-SE Manual (V1.05 / 2010-SEP-29)
11
4.5 Input/output circuits
The module offers 2 stop switch inputs, 2 general purpose inputs and 2 general purpose outputs. The stop
switch inputs STOP_L and STOP_R are +5V tolerant and include 1k pull-up resistors to +5V. The general
purpose inputs IN_0 and IN_1 accept digital (e.g. 5V or 24V compatible) signals or analog signals (0..10V) and
include pull-down resistors.
The general purpose outputs are open-collector outputs with integrated freewheeling diodes. Max. sink
current per output is 100mA and max. voltage at output when output is inactive / output transistor is
switched off is limited to module supply voltage due to the integrated freewheeling diode.
4.5.1 Reference switch inputs
There are 2 reference/stop switch inputs (STOPL / STOPR). Both inputs offer an internal pull-up resistor (1k)
and accept voltages between 0 and +5V.
+5V
+5V
1k
1k
STOP_L
STOP_R
10k
1nF
10k
1nF
GND
GND
Figure 4.5: Reference/stop switch inputs STOP_L, STOP_R
4.5.2 General purpose inputs
There are 2 general purpose inputs (IN_0 / IN_1). Both inputs offer internal voltage divider and voltage
limiter and accept input voltages between 0 and +24V as digital inputs and between 0 and +10V as analog
inputs (depending on software settings). The voltage divider resistors act as pull-down resistors, also.
+3V3
+3V3
IN_0
IN_1
10k
10k
4k75
4k75
GND
GND
GND
GND
Figure 4.6: General purpose inputs IN_o, IN_1
Early version of module (with pcb version 1.0 and 1.1) contained 1k resistor instead of 4k75 resistor as low
side resistor in voltage divider. For these modules full scale analog input range is +36V instead of +10V.
Copyright © 2010, TRINAMIC Motion Control GmbH & Co. KG
TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
