Siemens M7-400 ユーザーズマニュアル

1-18

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

Insulation resistance was demonstrated in routine testing with the following test
voltages in accordance with IEC 61131-2:

Table 1-16 Test Voltages

0 V < U

e

 

≤

 50 V

350 V

50 V < U

e

 

≤

 100 V

700 V

100 V < U

e

 

≤

 150 V

1300 V

150 V < U

e

 

≤

 300 V

2200 V

Safety class I to IEC 60536 (VDE 0106, Part 1). In other words, a connection is
required from the protective conductor to the power supply module.

Degree of protection IP 20 to IEC 60529. In other words, there is protection against
contact with standard probes.

There is no special protection against the ingress of water.