JUMO 705030 mTRON T - Digital Input/Output Module Operating Manual - Manual (Page 23)

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4 Electrical connection
4.1 Installation notes
Requirements for the personnel
• Work on the modules must only be carried out to the extent described and, like the electrical
connection, only by qualified personnel.
• Before plugging and unplugging connection cables ensure that the person performing the
work is electrostatically discharged (e.g. by touching grounded metallic parts).
Cables, shielding, and grounding
• When selecting the cable material, when installing, and when performing the electrical con-
nection of the module, the regulations of DIN VDE 0100 "Erection of power installations with
rated voltages up to 1000 V" and the respective national regulations (e.g. on the basis of
IEC 60364) are to be observed.
• Certain cables must be heat resistant up to at least 80 °C at maximum load. The relevant
instructions in the connection diagram of the affected modules must be observed.
• Route input, output, and supply cables separately and not parallel to one another.
• Only use shielded and twisted probe and interface cables. Do not route the lines close to
current-carrying components or cables.
• For temperature probes, ground the shielding on one side in the control cabinet.
• Do not perform loopthroughs on the grounding cables, but route the cables individually to a
shared grounding point in the control cabinet; in doing so, ensure that the cables are as
short as possible.
Ensure that the equipotential bonding is correct.
Electrical safety
• Isolate power supply units from the voltage supply on the primary side if there is a risk of
touching parts with dangerous electrical voltage (e.g. 230 V) in the course of work.
• The fuse rating of the power supply units on the primary side should not exceed a value of
10 A (inert).
• With modules with relay or solid state relay outputs, the load circuits can be operated with
a dangerous electrical voltage (e.g. 230 V). Disconnect load circuits from the voltage supply
during installation/dismounting and electrical connection.
• In order to prevent the destruction of the relay or solid state relay outputs in the event of an
external short circuit in the load circuit, the load circuit should be fused to the maximum ad-
missible output current.
• The modules are not suitable for installation in areas with an explosion hazard.
• In addition to a faulty installation, incorrectly set values on the module could also impair the
correct function of the following process. Therefore, ensure that safety devices independent
of the module (e.g. overpressure valves or temperature limiters/monitors) are available and
that it is only possible for qualified personnel to define settings. Please observe the corre-
sponding safety regulations in this context.
NOTE!
These installation notes apply for the entire measuring, control, and automation system and,
on some occasions, are only applicable for a specific module.
The respective connection diagram shows the context.