Siemens SIMATIC ET 200SP HA Notice De Service page 13

Commissioning
• You must observe the national regulations during commissioning.
• You must observe the guidelines according to DIN EN IEC 60079-17 for functional
checks.
Derating
The table shows the maximum permissible output current for the Ex-Power Module
depending on the installation position and the ambient temperature.
Mounting position
Horizontal installation
Vertical installation
Specific conditions of use
CAUTION
Specific conditions of use
1. This equipment shall be installed in an enclosure with an ingress protection of at
least IP54 in accordance with EN 60079-0 and EN 60529. The installation shall also
ensure Pollution Degree 2 (as defined in EN 60664-1) inside the enclosure. All
circuits shall be limited to Overvoltage category I or II. These requirements apply
even when installed in a non-hazardous area.
2. The earth connection of the mounting rail shall be connected to the local potential
equalization system per applicable installation standard.
3. Transient protection shall be provided that is set at a level not exceeding 140 % of
the peak rated voltage value at all supply terminals to the equipment, or at most
set at 119 V.
Maintenance
The Ex-I/O modules are maintenance-free.
In general, pulling or plugging modules is not allowed in Zone 2. Before starting work,
make sure that there is no explosive atmosphere or that the power supply is switched
off.
For repairs, you must send the I/O module to the manufacturing location. The repair
may only be carried out there.
Ex-DQ 2x17.4 VDC/27mA
A5E50373587-AB, 03/2023
Ambient temperature
From -40 °C to 60 °C
From -40 °C to 70 °C
From -40 °C to 50 °C
From -40 °C to 60 °C
Ex-DQ 2x17.4 VDC/27mA
Output current
0.8 A
0.6 A
0.8 A
0.6 A
13