Electrical connection
Leuze electronic GmbH + Co. KG
BPS 8
39
Connecting the functional earth FE
• BPS 8 with cable (option) and open cable end:
• Use shielded cables (see chapter 12.5 "Accessories – Cables").
• Connect the shield in the switch cabinet to FE (functional earth).
• The BPS 8 is usually connected to an earthed steel structure (PE). To prevent compensating cur
-
rents, FE and PE must be configured for potential equalization.
• BPS 8 connected via MA 8…:
• Use shielded cables (see chapter 12.5 "Accessories – Cables").
• Connect PIN 5 of MA 8 PWR connection cable to FE.
• The BPS 8 is usually connected to an earthed steel structure (PE). To prevent compensating cur
-
rents, FE and PE must be configured for potential equalization.
Cable lengths and shielding
The following maximum cable lengths and shielding types must be observed:
CAUTION
Connect functional earth!
Ensure that the functional earth (FE) is connected correctly.
Fault-free operation is only guaranteed if the functional earth is connected properly.
Connection
Interface
Max. cable length Shielding
BPS 8 - Service
RS 232
10 m
Absolutely required,
sheath of a shielded line
BPS 8/MA 8… - Host
RS 485
25 m
Absolutely required, shielded
Switching input
10 m
Not necessary
Switching output
10 m
Not necessary
