Ac supply considerations for bulletin 284e units, Ungrounded and high resistive distribution systems, Disconnecting movs – Rockwell Automation 281E ArmorStart EtherNet/IP - Getting Started User Manual
Page 15
Publication 280E-QS001B-EN-P – February 2011
ArmorStart EtherNet/IP Distributed Motor Controller Getting Started 15
Figure 21 – Receptacle Connections for Incoming 3-Phase Power – 10 A Short
Circuit Protection (M22)
Figure 22 – Receptacle Connections for Incoming 3-Phase Power – 25 A Short
Circuit Protection (M35)
AC Supply Considerations
for Bulletin 284E Units
Ungrounded and High Resistive Distribution Systems
Disconnecting MOVs
To prevent drive damage, the MOVs connected to ground must be disconnected
if the drive is installed on an ungrounded and high resistive distribution system
where the line-to-ground voltages on any phase could exceed 125% of the
nominal line-to-line voltage. To disconnect the MOVs, remove the jumper shown
in Figure 24, Jumper Removal.
1.
Before installing the Bulletin 284E, loosen four mounting screws.
2.
Unplug control module from the base unit by pulling forward.
Pin 1: L1 (black)
Pin 2: L2 (white)
Pin 3: L3 (red)
Pin 4: Ground (green/yellow)
Pin 1: L1 (black)
Pin 2: Ground (green/yellow)
Pin 3: L3 (red)
Pin 4: L2 (white)
ATTENTION: The Bulletin 284E contains protective Metal Oxide
Varistors (MOV)s that are referenced to ground. These devices
should be disconnected if the Bulletin 284E is installed on an
ungrounded and high resistive distribution system.