Preparations; Voltage Testing Module Stm·02; Prior To First Activation - schmersal bp408 Installation Manual

Figure 59
View of an STM-02 for
protection of the control system
from overvoltage
81

8.1 Preparations

During on-site commissioning, no additional measuring instruments
are required apart from a multimeter. The use of the STM-02 voltage
testing module is recommended.
8.2 STM-02 Voltage Testing Module
The STM-02 voltage testing module was developed in order to protect
the elevator control system from destruction due to overvoltage during
installation and repairs.
N !
OTE
You have to install the voltage system in the control system for
monitoring purposes during the commissioning process. After
commissioning, it must be removed again and can be used for other
operations.

8.2.1 Prior to First Activation

The control circuit must be grounded in accordance with VDE 0100
and EN 81. The "PE" terminal of the control system is therefore always
connected to the PSU by a green/yellow line.
C !
AUTION
Make sure that the elevator system is powered down!
• Only connect the green/yellow protective conductor to the terminal (100)
in an unpowered condition. The negative potential of the control circuit
may not be connected to the "PE" potential of the control system in no
location of the elevator system.
• Therefore, be sure to check the connection of STM-02 to check whether
there really is no connection between the "PE" terminal of the control
system and the terminal (100) of bp408. Use an ohmmeter or continuity
tester.
• If you have checked the previous points, the voltage testing module can
be connected as shown in the supplied drawing.
You can then commence the installation or repair operations.
Installation Manual "bp408" System – Commissioning