278 Rockwell Automation Publication 193-UM015E-EN-P - October 2015
Chapter 5 Operating Modes
Two-speed Starter (Local I/O) – Two-wire Control
The E300 relay’s Operating Mode Two Speed Starter (Local I/O) – Two Wire
Control (Parameter 195 = 46) uses Input 0 to control Output Relay 0, which
controls the contactor coil of the high-speed contactor, and Input 1 to control
Output Relay 1, which controls the contactor coil of the low-speed contactor.
Both Input 0 and Input 1 are maintained signals, so the two-speed starter remains
energized when either Input 0 or Input 1 is active.
InterlockDelay (Parameter 215) defines the minimum time delay when switching
direction.
The reset button of the E300 Operator Station is enabled for this operating
mode.
Rules
1. Available for Control Module firmware v5.000 and higher.
2. Output Pt00 Assignment (Parameters 202) must be set to Control Relay.
3. Output Pt01 Assignment (Parameters 203) must be set to Control Relay.
4. Overload Trip must be enabled in TripEnableI (Parameter 183).
5. Communication Fault & Idle Override (Parameter 346) must be enabled.
6. Network Fault Override (Parameter 347) must be enabled.
Wiring Diagram
The E300 relay’s Output Relay 0 is wired as a control relay to the high-speed
contactor and Output Relay 1 is wired as a control relay to the low-speed
contactor. Both relays open when a trip event occurs. Figure 181
is a wiring
diagram of a two-speed starter with Output Relay 0 and Output Relay 1
configured as control relays.
The Two-speed Starter (Local I/O) – Two-wire Control operating mode uses the
signal from Input 0 or Input 1 to control the starter. When an E300 powers up,
the starter energizes if either Input 0 or Input 1 is active.
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