Installation
40
Close the cable glands properly before applying power to the TCE80**!
WARNING!
The Ex d protection of the housing is void, if any of the cable glands is not closed properly!
Panel Mount Version
The supply terminals and the digital I/O terminals are rated for U
M
= 250V whereas the analog output and
interface terminals are rated for U
M
= 30V DC.
Connect the unit as described in chapter 3.2.3 ff. and chapter 3.3.5 to 3.3.7.
3.3.5 Power Supply and Grounding
For operation in hazardous areas a good connection of PE is mandatory. The cross section of the PE cable must
be at least the cross section of the supply cable or 1mm², whichever is higher.
The supply terminals (50, 51 for 24V DC or 90, 91 for mains operation) are designed for a rated voltage of 250V
AC.
WARNING!
Applying 250AC to the DC supply terminals (50, 51) will not affect the Ex safety of the TCE or TCM, but
will damage the supply circuit of the TCE!
The TCE80**-L-*B**-Ex can be connected to a 24V DC and a mains supply simultaneously. The unit will operate
properly as long as one of the 2 supplies is present.
For the circuit diagrams and the general description refer to chapter 3.2.4.
3.3.6 Digital Control Inputs and Outputs
The digital I/O terminals are designed for a rated voltage of 250V AC.
WARNING!
Applying 250AC to the digital I/O terminals (5, 6, 7, 8) will not affect the Ex safety of the TCE or TCM, but
will damage the I/O board of the TCE!
For the circuit diagrams and the general description refer to chapter 3.2.5.
3.3.7 Analog Outputs
The analogue current output terminals are designed for a rated voltage of 30V AC.
The outputs are protected against wrong polarity. Voltages below 30V will not damage the outputs nor affect the
Ex safety.
WARNING!
Applying more than 30V DC to any of the outputs will damage the TCE and destroy the protection of the
TCM!
WARNING!
If more than 30V have been applied to any of the analog output pins, the unit must be returned to KEM
for repair as the safety barrier might be destroyed!
For the circuit diagrams and the general description refer to chapter 3.2.6.
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