Siemens SENTRON PAC4200 Manual page 58

No.
(19)
(20)
(21)
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 4-3
The connection
and output and the RJ45 connector.
Connect the reference potential to the equipotential bonding strip in the control cabinet.
Phase-synchronous connection
The phases must be connected phase-synchronously. The specified terminal assignment
cannot be changed by changing the parameters.
Protecting the current measuring inputs
Open transformer circuits will result in electric shock and arc flashover.
Will cause death, serious injury or property damage.
Only measure current with external current transformers. Do not use fuses for circuit
protection. Do not open the secondary circuit of the current transformers under load. Short
circuit the secondary current terminals of the current transformer before removing this
device. The safety information for the current transformers used must be followed.
PAC4200
System Manual, 05/2019, A5E02316180B-05
Connection Function
DO0 Digital output 0
Battery Battery compartment
MOD 1/2 Slot for optional expansion module
Reference potential terminal
Terminal block: digital input and output, reference potential
"reference potential" discharges interference affecting the digital input
DANGER
Connection
4.2 Connections
57