NOTICE
Fault caused by I/O devices
The connection of I/O devices can cause faults in the device.
The result may be personal injury and damage to the machine or plant.
Note the following when connecting I/O devices:
• Read the documentation of the I/O devices. Follow all instructions in the documentation.
• Only connect I/O devices which are approved for industrial applications in accordance with
EN 61000-6-2 and IEC 61000-6-2.
• Peripheral devices that are incapable of hot-plugging may only be connected after the
device has been disconnected from the power supply.
NOTICE
Damage through regenerative feedback
Regenerative feedback of voltage to ground by a connected or installed component can
damage the device.
Connected or built-in I/Os, for example, a USB drive, are not permitted to supply any voltage to
the device. Regenerative feedback is generally not permitted.
6.2
Connecting HART devices to SITRANS MX300
Introduction
SITRANS MX300 always acts as a secondary master in accordance with the HART standard.
Connection und parameter assignment of the SITRANS MX300 channels depends on whether
the HART device is already connected to a HART Master.
Note
Internal or external resistor
You can use an external resistor or the internal resistor of the SITRANS MX300. If you use an
external resistor at a channel, disable the respective DIP switch at the SITRANS MX300 (Page 38).
Before connecting the devices
Observe the following safety instructions:
• General safety notes (Page 23)
• Basic safety notes: Connecting (Page 41)
Read the entire device manual in order to achieve the optimum performance of the device.
Connecting
6.2 Connecting HART devices to SITRANS MX300
SITRANS CC240 and SITRANS MX300
42
Operating Instructions, 06/2021, A5E47280695-AB
