ESP Safety UPES-50D, Operating Manual, Page: 7 / 51

7
Pre-starting Procedure
Prior to installation it is necessary to perform visual inspection. Pay attention to the following:
1) signs of damages;
2) availability of all fixture elements;
3) Availability of grounding devices.
Installation shall be performed in accordance with a duly established project of onsite allocation
pursuant to the installation diagram with due account for threshold device design. When
performing installation, consider the following:
1) Local Electrical Installation Regulations
2) Local Safety Regulations on Consumer Electrical Installation Operation;
4) This Operating Manual.
In order to connect UPES to a personal computer via RS-485 communication channel, it is
possible to use any shielded twisted pair cables. In this case, signal wires are connected to
contacts “485А” and “485В”, and the shield is connected to contact “GND”, located at the
terminal block on the controller module rear side. In order to connect UPES to the network and
external actuation and signaling devices, it is possible to use any cables, cords or wires rated for
operational voltage and current specified in this OM.
UPES shall be grounded by means of a screw clamp located at the bottom of the power unit rear
wall. Upon completion of installation, check the following: - insulation resistance, which shall be
not less than 0.5 MOhm; - grounding device resistance, which shall be not less than 4Ohm.
When installing UPES, provide free space above and under it in a rack with height not less than
the threshold device height (132 mm)