Emerson 400518-01 AC Input Power Connections, Operation on DC Input Supply, Front View

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Installation

Diagnostics

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Specification

AC Input Power Connections

Power must be "Off" for a minimum of 6 minutes for the Epsilon EP206 drive and 3 minutes for the Epsilon EP202/204 drives before unplugging the power connection. This will ensure the bus voltage has bled down to a safe level (below 50 Vdc).

Do not connect or disconnect AC power by inserting or removing the AC power connector. Using the connector in this manner, even once, will damage the connector making it unusable.

Front View

-B PE SH B+PE

PE Redundant PE connection

L1

L2

L1

L2

50/60 Hz

24 Vdc MOTOR

PE

R

S

T

PE

Tighten screws

to 5 in-lb.

90-264 Vac

EP204-I00-0000 9606XX-XX A1 SN 0610E014

Terminals are suitable for one 16 AWG to 12 AWG or ISO 1,5 or ISO 2,5 stranded conductors.

Figure 14: Epsilon EP AC Power Wiring Diagram

Operation on DC Input Supply

At this time, the EP drive is not UL listed for operation on a DC input supply.

The EP drive can operate on DC input as low as 10 Vdc, though recommended minimum is 24 Vdc. It can also operate from a common DC link with voltage to 373 Vdc, the voltage resulting from 264 Vac applied to a rectifier, with regen to 400 Vdc intermittently.

For DC input supply less than 24 Vdc, the DC input should be connected to the B+ and B- terminals at J8 to avoid losses in the rectifier and inrush limiter. At such low voltages the bus caps do not need inrush protection. For DC supply greater than 24 Vdc, the supply should be connected to L1 and L2 terminals on J1. Polarity does not matter. The rectifier blocks reverse current so regen energy will not come back to the supply. DC supply greater than 24 Vdc may be applied to the B+ and B- terminals of J8, but the supply must provide soft-start or inrush current limiting and must be able to handle any anticipated regen energy.

Installation 17