Contactor Enable Relay - Allen-Bradley Kinetix 5700 User Manual

Chapter 4 Connector Data and Feature Descriptions
110

Contactor Enable Relay

The contactor-enable circuitry includes a relay-driven contact within the
2198-Pxxx DC-bus power supply and 2198-RPxxx regenerative bus supply.
The relay protects the Kinetix 5700 drive system in the event of overloads or
other fault conditions.
An AC three-phase mains contactor must be wired in series between the
branch circuit protection and the power supply. In addition, the AC three-
phase contactor control string must be wired in series with the contactor-
enable relay at the contactor-enable (CED) connector. Refer to
Examples on page 343
ATTENTION: Wiring the contactor-enable relay is required. To avoid personal
injury or damage to the drive, wire the contactor-enable relay into your
control string so that:
• three-phase power is removed and the power supply is protected under
various fault conditions.
• three-phase power is never applied to the Kinetix 5700 drive system before
control power is applied.
Figure 66 - Contactor-enable Relay Circuit
Normally
Open
Relay
Power Supply
Surge suppression (diode, varistor module, RC module, or DC electronic
interface) is required across the auxiliary and main contactor coils.
Table 47 - Regenerative Bus Supply (CED) Relay Output Specifications
Attribute Value
On-state current Current flow when the relay is closed.
On-state resistance Contact resistance when the relay is closed.
Off-state voltage Voltage across the contacts when the relay is open. 24V DC
Table 48 - DC-bus Power Supply (CED) Relay Output Specifications
Attribute Value
On-state current Current flow when the relay is closed.
On-state resistance Contact resistance when the relay is closed.
Off-state voltage Voltage across the contacts when the relay is open. 24V DC
Rockwell Automation Publication 2198-UM002G-EN-P - February 2019
for wiring examples.
CONT EN+
CONT EN-
Power Wiring
Nominal Maximum
– 1 A
0.1 Ω
–
28V DC
Nominal Maximum
– 1 A
1.0 Ω
–
28V DC