One Drive, Any Power, Any Motor. The Unidrive SP is a universal AC and Servo drive with ratings from to 2,hp. No. String, Cause of trip. 1, UU, DC link under voltage. Under voltage trip and restart levels are as follows: Drive voltage rating UU trip level UU restart level. Unidrive SP AC Drive from Emerson/Control Techniques is a complete drive automation range that covers the power spectrum from to 2, hp. All drives .

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Er Option module in slot 2: A compare has been carried out between a data block on a SMART card and the drive and the compare wmerson failed.

P Power module over voltage PH. The option module is identified by the drive by an option code. If you are wanting to upgrade your obsolete Unidrive SP to an M Series Drive, use our quick reference guide to choose the right replacement Drive for your application: Initialisation is required because the encoder type parameter Drive over-heat based on thermal model see If the motor does not stop in 10seconds the drive trips immediately.

Drive voltage rating UU trip level UU restart level Fast turnarounds are usually no problem!

Uunidrive EnC1 Drive encoder trip: This trip indicates that the power was removed when parameters were being saved which resulted in an error in a power down save parameter bank.


When the drive is in the terminal mode the following sequence occurs under default conditions: If the module is removed after power-up the drive also produces this trip.

This occurs when When the drive is not running, there are several additional parameters in menu 6 that can assess the issue. Hiperface encoder – The encoder type could not be identified during auto-configuration.

Unidrive SP Error and Trip codes

An attempt has been made to create a data block on a SMART card, but there is not enough space on the card. Position feedback direction incorrect, or motor could not be stopped during the inertia test, or minimal movement phasing test failed see P Power module power supply fail OIdC. P Power module heatsink over temperature OV. Comms timeout or set up transfer time too long EnC5 Drive encoder trip: Call us now on to enquire about a refurbished Unidrive SP.

Drive encoder commutation signals connected incorrectly, or measured inertia out of range, or motor was rotating when the minimal movement phasing test started see Attempting to create data blocks with numbers from to will always cause a trip.

The trip can only be removed by entering a load default command i. See trips 36 and 37 below.

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The Unidrive SP can be enabled to run in several ways. An attempt has been made to transfer a data block from a SMART card to the drive or to compare a SMART card data block and the checksum is incorrect or the data structure on the card is incorrect.


All drives share the same flexible control interface regardless of the power rating. Boot A write to a menu 0 parameter has been initiated via the keypad by exiting edit mode and parameter If errors occur in both banks an EEF trip is initiated.

Intelligent Sensors and Safety Products. This trip is also produced if an attempt is made to access a data block that has already been opened by an option module.

Free Standing drives can be ordered to include unidrivee of the power input equipment needed to allow immediate connection to the motor and to the power supply. A failure has occurred during the alignment of the analogue signals of a SINCOS encoder with the digital count derived from the sine and cosine waveforms and the comms position if applicable. The drive stores the codes of the modules fitted when the drive parameters are saved.