ALLEN BRADLEY POWERFLEX 4M MANUAL PDF

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Safety Ground - PE This is the safety ground for the drive that is required by code. One of these points must be connected to adjacent building steel girder, joist , a floor ground rod or bus bar. Motor Ground The motor ground must be connected to one of the ground terminals on the drive.

Shield Termination - SHLD Either of the safety ground terminals located on the power terminal block provides a grounding point for the motor cable shield. The motor cable shield connected to one of these terminals drive end should also be connected to the motor frame motor end.

Use a shield terminating or EMI clamp to connect the shield to the safety ground terminal. The conduit box option may be used with a cable clamp for a grounding point for the cable shield. When shielded cable is used for control and signal wiring, the shield should be grounded at the source end only, not at the drive end. RFI Filter Grounding Using single phase drives with integral filter, or an external filter with any drive rating, may result in relatively high ground leakage currents.

Therefore, the filter must only be used in installations with grounded AC supply systems and be permanently installed and solidly grounded bonded to the building power distribution ground. Ensure that the incoming supply neutral is solidly connected bonded to the same building power distribution ground. Grounding must not rely on flexible cables and should not include any form of plug or socket that would permit inadvertent disconnection.

Some local codes may require redundant ground connections. The integrity of all connections should be periodically checked.

This product should be installed with either input fuses or an input circuit breaker. The ratings in the table that follows are the minimum recommended values for use with each drive rating. The devices listed in this table are provided to serve as a guide.

Bulletin M can be used in single and group motor applications. Bulletin M can be used up stream from the drive without the need for fuses. Refer to the selection guide for Bulletin M motor protectors for other ratings suitable for your particular application. Installation must comply with specifications regarding wire types, conductor sizes, branch circuit protection and disconnect devices.

For the same reason, if a drive sharing a conduit is being serviced or installed, all drives using this conduit should be disabled.

This will help minimize the possible shock hazard from cross coupled power leads. For many installations, unshielded cable is adequate, provided it can be separated from sensitive circuits. As an approximate guide, allow a spacing of 0. In all cases, long parallel runs must be avoided. Do not use cable with an insulation thickness less than 15 mils 0.

Do not route more than three sets of motor leads in a single conduit to minimize cross talk. Use copper wire only. Wire gauge requirements and recommendations are based on 75 degree C. Do not reduce wire gauge when using higher temperature wire.

Do not use THHN or similarly coated wire in wet areas. Any wire chosen must have a minimum insulation thickness of 15 mils and should not have large variations in insulation concentricity. Installations with long motor cables may require the addition of external devices to limit voltage reflections at the motor reflected wave phenomena. See Table 1. E for recommendations. The reflected wave data applies to all frequencies 2 to 16 kHz.

For V ratings, reflected wave effects do not need to be considered. Table 1. Consult factory for recommendations. Output Disconnect The drive is intended to be commanded by control input signals that will start and stop the motor. A device that routinely disconnects then reapplies output power to the motor for the purpose of starting and stopping the motor should not be used. If it is necessary to disconnect power to the motor with the drive outputting power, an auxiliary contact should be used to simultaneously disable drive control run commands.

To remove: 1. Press in and hold the locking tab. Slide finger guard down and out. Replace the finger guard when wiring is complete. Figure 1. The drive is designed to use control input signals that will start and stop the motor. If used, the input device must not exceed one operation per minute or drive damage can occur. If hazards due to accidental contact with moving machinery or unintentional flow of liquid, gas or solids exist, an additional hardwired stop circuit may be required to remove the AC line to the drive.

When the AC line is removed, there will be a loss of any inherent regenerative braking effect that might be present - the motor will coast to a stop. An auxiliary braking method may be required. Wire with an insulation rating of V or greater is recommended. Control and signal wires should be separated from power wires by at least 0. Verify proper configuration prior to applying input signals. Belden or equiv.

Minimum Insulation Rating V 60 degrees C degrees F If the wires are short and contained within a cabinet which has no sensitive circuits, the use of shielded wire may not be necessary, but is always recommended. Maximum Control Wire Recommendations Do not exceed control wiring length of 30 meters feet. Control signal cable length is highly dependent on electrical environment and installation practices.

All other stop sources are controlled by P [Stop Mode]. Two wire control shown. Relay N. Relay Common Relay N.

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