Electrical installation 
  4.10 Signal connections 
Inverter chassis units 
Operating Instructions, 07/2016, A5E00331449A 
107 
Table 4- 37  Terminal block X530 
 
: - 3 … +30 V 
 typical: 10 mA at 24 V DC 
: 
For "0" to "1": Typ. 50 µs max. 100 µs 
 for "1" to "0": Typ. 130 µs, max. 150 µs 
: 
Reference potential is terminal M2 
 (including ripple) 
High level: 15 … 30 V 
2  DI 5 
6  M 
Max. connectable cross-section: 1.5 mm² 
1)
  DI: digital input; M2: ground reference; M: Electronics ground 
 
 
Note 
Ensuring the function of digital inputs 
An open input is interpreted as "low".
 
To enable the digital inputs (DI) to 
function, terminal M2 must be connected. 
This is achieved through one of the following measures:
 
  Also route the reference ground of the digital inputs. 
  A jumper to terminal M. (
 This removes the electrical isolation for these digital 
inputs.)