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Operating Manual
MHM-97884
•
The tip of the sensor types EZ105x, EZ108x, EZ116x, EZ116H, EZ132x, and PR 642x
must be installed in such a way that a mechanical hazard (impact) can be excluded.
•
The terminal screws have to be tightened with a torque of 0.5 to 0.6 Nm.
•
The converter is intended for use with safety barriers as an Ex ia device or without
safety barriers as an Ex ec device. Once used without an safety barrier, it is not
permitted to use the device as an Ex ia device.
6.2
Installation requirements – intrinsic safe
In the following conditions, sensors EZ105x, EZ108x, EZ116x, EZ116H, EZ132x, and
PR 642x in combination with the AMS EZ 1000 Converter can be used for applications in
hazardous areas for Zone 0, protection class Intrinsic safety – Ex ia IIC T6:
•
Connect the AMS EZ 1000 Converter by using safety barriers according to
drawings.
•
All barriers with Zener diodes and safety data within the permitted limits are approved.
•
The characteristic of the safety barriers must be linear.
•
Install the safety barriers outside of the explosive area, in cabinets or control cubicles
with protection classes of at least IP 20, according to IEC 60529.
•
With appropriate approval, the safety barriers can be installed in Zone 2. In this case,
observe the specifications of the manufacturer.
•
The intrinsically safe circuits are connected to earth; along the intrinsically safe circuits
potential equalization must exist.
•
To achieve compensation of electric potentials, connect the connectors for the
protective earth to the corresponding protective earth connectors by a compensation
cable within the explosive area.
•
Isolate the mounting rail for the safety barriers.
•
Within the ATEX-field of application, dimension the compensation cable according to
IEC / EN 60079-14 12.2.4 with a minimum copper wire cross section of 2x1.5 mm
1x4 mm
installation instructions.
•
The signal converter type EZ1000 and type EZ1000-SIS shall be mounted completely
inside an additional enclosure in accordance with IEC / EN IEC 60079-0, providing a
degree of protection of not less than IP20.
•
During the installation internal wiring, clearances, creepage distances, and separations
have to be considered according to IEC / EN 60079-11.
•
Observe the heating within the field housing. Expect a maximum heat dissipation of
840 mW for each AMS EZ 1000 Converter.
•
Neither P
MHM-97884, Rev. 1.8
2
. Outside of the ATEX-field of application, observe the respectively valid
nor P
may exceed 630 mW.
O1
O2
Hazardous location installation
October 2023
Control
2
or
43
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