MR TAPCON 250 Instructions D'installation page 68

NOTICE
6.4.4.2 Mounting terminating resistor of CAN bus
NOTICE
®
68 TAPCON 250
Damage to the device!
If you connect the CAN bus cable to devices with different potentials, cur-
rent may flow across the shielding. This current may damage the device.
► Connect the devices to a potential equalization rail to equalize the poten-
tial.
► If both devices have different potentials, only connect the CAN bus cable
shielding to one device.
Variant 1: The connected devices share the same potential
1. Connect all devices to a potential equalization rail to equalize the poten-
tial.
2. Connect the CAN bus cable shielding to all connected devices.
Variant 2: The connected devices have different potential levels
Note that the shielding is less effective with this variant.
1. Connect the CAN bus cable shielding to just one device.
2. Connect the wires of the shielded CAN bus cable in accordance with the
connection diagram supplied.
If you want to operate the device in parallel operation, you need to mount a
120 Ω terminating resistor at both ends of the CAN bus between CAN_L and
CAN_H (see supplied connection diagram).
6.4.5 Connecting SCADA
Only with the TAPCON® 250 Expert version.
Damage to the device!
Using the wrong data cable may damage the device.
► Only use data cables which comply with the description below.
Depending on the control system used, you have to connect the device with
one of the following versions.
8741483/02 EN
6 Mounting
Maschinenfabrik Reinhausen GmbH 2022