Baldor MicroFlex Quick Start Manual

Quick Start Guide

MN1925 8/03

IMPORTANT NOTE !

This Quick Start Guide is not in tended as a replacemen t for the full in stallation manual,

MN1919 Micr oFlex Installation Manual, which provides detailed information about the MicroFlex.

The installation manual is available in PDF format on the supplied Baldor Motion Toolkit CD.

Mounting

MicroFlex is designed to be supported by four M5 s crews, spac ed
as s hown in the diagram.

MicroFlex must be fixed to a smooth vertical metal surfac e to
ensure effective cooling.

63.5mm

167.7 mm

PrintedinUK

© Baldor UK Ltd

Baldor Electric Company

P.O. Box 2400

Ft. Smith, AR 72902-2400

U.S.A.

Visit www.supportme.net for the latest documentation and software releases.

Mounting

hole centers

Cooling for 6A & 9A models

Effective cooling for the MicroFlex is essential:

* The 3A model requires no additional cooling.
* The 6A model requires additional forc ed air cooling at 1.0m/s or greater.
* The 9A model requires additional forc ed air cooling at 2.5m/s or greater.

2

1

Heatsink

Fan

Quoted air velocities ar e for air originating from below the MicroFlex,
passing parallel to the heatsink. With MicroFlex mounted as spec ified,
quoted air velocities allow full driv e rated current at ambient
temperatures up to 45°C.

Regeneration resistor (optional)

A suitable r egeneration res istor may be required to
dissipate exc ess power from the internal DC bus
during motor deceleration.

The regenerat ion resistor must have a resistanc e of
at least 39Ω, induc tance of less than 100µH, and a
power rating suitable for the application. B aldor parts
RG56 (44W) or RG 39 (100W) are rec ommended.

Connect the regener ation resistor to R1 and R2.

X1

R1

R2

Step & direction inputs (optional)

+5V step and direction signals can be used to provide the
position reference when operating in pos ition control mode.

Connect the step and direction signals to pins 9, 10 and 11
of connector X3.

Step and direction signals are not required if the analog
demand input is to be used as a torque or speed referenc e
(see below).

X3

STEP

DIR

DGND

Motor feedback input

The MicroFlex can operate with incremental or SSI encoder
feedback dev ices. The device ty pe is conf igured in
WorkBench v5. Suitable cables are av ailable from B aldor.

Connect the motor feedbac k signal t o connector X8.

X8

Serial communication

The MicroFlex communicates with the host PC using RS232
communication.

Connect an RS232 cable between connec tor X6 and the host
PC’s COM port.

X6

AC power, fuses and filter

MicroFlex can accept supply voltages of
105-250VAC 50/60Hz , 1-phase or 3 -phase.

For three phase supplies, connec t phases to L1, L2
and L3.

For single phase supplies, connect supply to any two
line inputs , for example L1 and L2.

The AC supply must incorpor ate a circuit breaker (or
fuse) and the specified filter. For ideal earthing, mount
filter on the same metal s urface as MicroFlex.

Protective earth must be connected to t he MicroFlex
case us ing an M4 screw in the top of the metal
heatsink.

X1

L1

L2

L3

Motor U V W outputs

Connect the motor to the U, V and W outputs.

The U, V and W outputs must be c onnected to
their c orresponding U, V or W terminal on the
motor. Misconnection may res ult in uncontrolled
motor mov ement.

Motor earth should be connected to the
MicroFlex case using an M4 sc rew in the top of
the metal heatsink.

The motor cable shield s hould be connected
using a conductive earth/ground clamp,
attached to the M4 threaded hole in the top of the
metal heats ink.

X1

V

W

U

24VDC control supply and filter

MicroFlex requires a 24VD C (20-30VDC) supply to power
the cont rol electronics .

Connect the c ontrol supply at connector X2.

A fus ed DC supply should be provided for the MicroFlex .
If other devices are to be power ed from the same 24V
supply, a filter (Baldor catalog number FI0014A00) s hould
be installed to isolate the MicroFlex from the rest of the
system. Alternatively, a ferrite sleeve may be attached to
the supply cable near connector X2.

X2

24V

0V

Drive enable input

To enable the Mic roFlex, 24V DC (12 -30VDC) must be
applied to the drive enable input.

Connect the drive enable signal to pins 6 and 7 of
connector X3.

X3

Drive enable +

Drive enable -

Analog demand input (optional)

A ±10VDC signal can be us ed to provide the demand
reference for t orque and s peed control modes.

For differential operation, c onnect the demand signal to pins
12 and 13 of connector X3. For single ended operation,
connect the positive s ignal to pin 13; connect the 0V side of
the signal and AIN - to AGND (pin 14).

An analog demand signal is not required if the step and
direction inputs are to be used as a position reference (s ee
above).

X3

AIN+

AIN-

3

4

5

6

7

8

9a

9b

10

AGND

COM

Host PCAC power

Motor power U V W

Serial
communication

Control circuit supply.
Use twisted pair cabl e

with a ferrite sleeve.

Motor

+24V 0V

Filter

L1
L2

L1

L2
L3

Star
point

L1

L2
L3

Optional regen resistor
(Dynamic brake)

L3

Connect motor power cable
shield at protective earth point,
using conductive s hield clamp.

Drive enable

input

+24V 0V

PE

From
fuses

AC power in

Motor feedback

Regen

Shielded twisted pair, clamped to
metal backplane near drive using
conductive shield earth/ground
clamp.

Connect AC power cable s hield to
metal backplane usi ng conductive
shield clamp.

Demand input: ±10V analog input
(shown) or +5V step and direction
inputs. Use shielded twisted pair(s) for
demand input(s). Connect cable shield
to the bottom of Mic roFlex using
conductive shield earth/ground clamp.