Electrical Connections - S2Tech PCS III Preliminary Manual

DIGITAL TRANSDUCER
Configuration and Modbus Interface

4.1. ELECTRICAL CONNECTIONS

Warning:
Avoid soldering activities nearby the transducer or a network of such transducers.
NOTE: the transducers can be connected to other type of fieldbuses, using specific gateways that can
be provided and configured by S2Tech, allowing a wider use of such products.
It is also possible to use units with wireless connection, using WiFi / Bluetooth or other proprietary
means of wireless transmission.
Please refer to the specific product's drawing for overall dimensions.
Cable Color
(DIN47100)
Blu
Red
Gray
Pink
Brown
Yellow
Green
Note 1: inside the transducer, CAN_GND and Analog GND are in common.
Note 2: We suggest that the digital connection to the instrument should performed using twisted
pairs shielded cables that are specifically designed for data transmission applications.
Note 3: inside the transducer no line termination resistor is installed, so an external line terminator
has to be installed at both ends of the communication line, between the Master and the Slave, in
order to avoid errors.
• Follow connection recommendations from official Technical CAN guidelines
• Terminate transmission line with 120 Ohm terminators
• Use appropriate shielded cables with twisted pairs used:
One twisted couple for CAN_L and CAN_H
One twisted couple for Power Supply + and Power Supply GND
Can GND can stand alone, using and additional twisted couple
• Remember that communication cable must avoid bifurcations and long stubs.
• Allowed connection topology is linear connection between all devices
PCS III Technical Description CANopen 1r1 UK 310715.docx
09/02/2021
Cable Pairs
Pair 1
Pair 2
Pair 3
Pinning installed M12 male connector 8 poles, front view / male
side view (Coding A)
Cable Shield is connected internally to the transducer's housing
and is to be connected to a good earth reference at the free end.
In case of Plug option, please verify that cable shield is connected
to the housing of the transducer.
Reference = CiA DR-303-1
In order to have good performances it is strongly suggested to:
PRELIMINARY
M12 connector
2
1
7
6
8
5
3
Meaning
Power Supply GND
Power Supply + 24 Vdc
CAN_L
CAN_H
CAN GND
Analog Output GND
Analog Output Signal
S2Tech srl
/
8 58