Emerson N1652, E171230 manual Standard Features, SmartCard, Internal Dynamic Braking Resistors

Standard Features

SmartCard

The SmartCard is a memory device that is supplied with every Unidrive SP and can be used to back-up parameter sets and PLC programs and copy them from one drive to another.

• Parameter and program storage

• Simplify drive maintenance and commissioning

• Quick set-up for sequential build of machines

• Machine upgrades can be stored on a SmartCard and sent to the customer for installation

Internal Dynamic Braking Resistors

During deceleration, the kinetic energy stored in the spinning mass of the motor/load combination is converted to electrical energy which recharges the drive’s DC bus. Dynamic braking resistors provide a means of rapidly dissipating that energy so that the drive does not fault from the DC bus over voltage trip. The Ohmic value and power rating of the braking resistor is a function of the drive type, size and duty cycle of the application.

A zero-space braking resistor is available for heatsink mounting on Unidrive SP frame sizes 0 to 2. These resistors are designed for low-inertia loads commonly used in servo type applications. For higher inertia loads, the heatsink- mounted resistor may not have enough braking capacity and a larger external resistor may be required. No additional thermal protection device is required with these heatsink- mounted resistor packages.

Frame	DC	Power
Size	Resistance	Rating	Order Code
0	70Ω	50W	SM-HEATSINK-DBR0
1	75Ω	50W	SM-HEATSINK-DBR1
2	37.5Ω	100W	SM-HEATSINK-DBR2

(Drives larger than Size 2 do not have this option.)

Unidrive SP-Compatible Encoders

Encoder Type

Quadrature incremental encoders with or without marker pulse

Quadrature incremental encoders with UVW commutation signals for permanent magnet motors with or without marker pulse

Forward / reverse incremental encoders with or without marker pulse

Forward / reverse incremental encoders with UVW commutation signals for permanent magnet motors with or without marker pulse

Frequency and direction incremental encoders with or without marker pulse

Frequency and direction incremental encoders with UVW commutation signals for permanent magnet motors with or without marker pulse

SinCos incremental encoders

Heidenhain sin/cos encoders with Endat comms for absolute position

Stegmann sin/cos encoders with Hiperface comms for absolute position

SinCos encoders with SSI comms for absolute position

SSI encoders (gray code or binary)

Endat comms only encoders

UVW commutation only encoders*

*This feedback device provides very low resolution feedback and should not be used for applications requiring a high level of performance

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