Siemens SENTRON PAC4200 Manual page 72

Connecting
6.2 Connections
Grounding
Conductive panels and doors on control cabinets must be grounded. The doors of the control
cabinet must be connected to the control cabinet using a grounding cable.
Reference potential
(13)
Figure 6-6
The connection
and output and the RJ45 connector.
Connect the reference potential to the equipotential bonding strip in the control cabinet.
Circuit breaker
A suitable circuit breaker must be connected upstream of SENTRON PAC4200 in order to
permit disconnection of the device from the power supply.
● The circuit breaker must be mounted close to the device and be easily accessible to the
user.
● The circuit breaker must be marked as the circuit breaker for the device.
Phase-synchronous connection
The phases must be connected phase-synchronously. The specified terminal assignment
cannot be changed by changing the parameters.
Supply voltage fuse protection
Damage to the device due to non-fused supply voltage
Damage to the device and the equipment may occur.
Secure the supply voltage with an approved (UL / IEC) fuse:
• SENTRON PAC4200 with wide-voltage power supply 0.6 A, Type C.
If a fusible link is used, a suitable approved (UL / IEC) fuse holder has to be used.
72
DIC DI1
Reference potential terminal
Terminal block: digital input and output, reference potential
"reference potential" discharges interference affecting the digital input
CAUTION
DI0 DOC DO1 DO0
SENTRON PAC4200
Manual, 09/2008, A5E02316180B-01