Basler Electric BE350 User Manual

Instructions

www.basler.com

+1 618.654.2341 (USA)

INTRODUCTION

The BE350 analog voltage controller regulates voltage on a
50 or 60 hertz brushless generator. Controller features
include frequency compensation, solid-state buildup
circuitry, and EMI filtering.

SPECIFICATIONS

Output Power

Maximum Continuous: 3.5 Adc at 73 Vdc (255 W)
One-Minute Forcing: 5 Adc at 105 Vdc (525 W) with

240 Vac power input

Exciter Field DC Resistance

Minimum: 21 Ω

Input Power

Range: 190–240 Vac, ±10%, 1-phase
Frequency: 50/60 Hz, ±10%
Burden: 500 VA

Sensing Input

Common with ac power input: 190–240 Vac, single-phase,
50/60 Hz, ±10%

Fuse

Bussmann GDC-4A or equivalent
Rating: 4 Aac, 250 Vac

Type: Glass tube, 5 x 20 mm, time

delayed

Voltage Adjustment Range

171 to 264 Vac

Regulation Accuracy

Better than ±1.0%, no-load to full-load

Response Time

Less than 1.5 cycles for ±5% change in sensing voltage

EMI Suppression

Internal electromagnetic interference (EMI) filtering

Voltage Buildup

Automatic voltage buildup occurs for residual generator
voltages as low as 10 Vac.

Power Dissipation

8 W maximum

Temperature

Operating: –40 to 60°C (–40 to 140°F)
Storage: –65 to 85°C (–85 to 185°F)

Vibration

2 to 27 Hz: 1.3 G
27 to 52 Hz: 0.914 mm, double-amplitude
52 to 1000 Hz: 5 G

Shock

Withstands up to 20 G in each of three mutually
perpendicular axes.

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Model

Part Number

Weight

184 g (6.5 oz) net

Agency Certification

UL recognized and CSA certified

CONTROLS

BE350 controls consist of jumpers and screwdriver­adjusted potentiometers.

Potentiometer Controls

BE350 potentiometer controls are accessible through the
controller front panel and are shown in Figure 1.

VOLT Control

This control raises and lowers the generator output voltage.

STAB Control

This control adjusts the stability by increasing and reducing
the response time of the BE350.

U/F Control

This control adjusts the corner frequency point of the
BE350 frequency compensation characteristic.

Jumpers

Two jumpers control BE350 operation: the Corner
Frequency jumper and the Voltage Adjust Rheostat jumper.
These jumpers are shown in Figure 2.

Corner Frequency Jumper

BE350 controllers are delivered with the Corner Frequency
jumper set for 60 hertz operation. This gives a corner
frequency of 55 hertz. For 50 hertz operation and a corner
frequency of 45 hertz, the Corner Frequency jumper must
be move to the 50 Hz terminal.

Voltage Adjust Rheostat Jumper

BE350 controllers are delivered with the Voltage Adjust
Rheostat jumper connected across terminals 6 and 7. This
enables adjustment of the generator output voltage through
the controller’s internal Voltage Control potentiometer.
Clockwise rotation of the Voltage Control potentiometer
increases the generator voltage.

If remote adjustment of the generator output is desired, the
Voltage Adjust Rheostat jumper must be replaced with a
user-supplied rheostat. A 2000 ohm, ½ watt rheostat will
provide adequate voltage adjustment for most applications.
Figure 6 shows the proper remote rheostat connections.

INPUT POWER/SENSING INPUT

Power for the exciter field and BE350 is derived from the
generator output. The acceptable power input range is 171
to 264 Vac. Connect the input power wiring to terminals 3
and 4 as shown in Figure 5.

EXCITER FIELD POWER CIRCUIT

Controller terminal F+ is connected to the brushless exciter
field positive terminal and controller terminal F– is
connected to the brushless exciter field negative terminal.

BE350

9166800143

Publication

9166800893

Revision

Date

-

09/10

Copyright

2010

Instructions

CAUTION

potential test equipment must

reading voltmeter for all voltage

The exciter field dc resistance must be no less
than 21 ohms.

If the exciter field dc resistance is less than 21 ohms and
the full-load field current does not exceed the maximum
continuous current rating of the controller, a resistor of
sufficient wattage must be added in series with the field to
increase the total resistance to 21 ohms.

FREQUENCY COMPENSATION

The frequency compensation feature improves system load
pickup performance by restraining voltage recovery until
the frequency has also started to recover. Figure 3
illustrates the underfrequency characteristics of the BE350.

The corner frequency range is set for 50 hertz or 60 hertz
by connecting the Corner Frequency jumper to the
appropriate terminal. Refer to Controls, Jumpers for details
about selecting the corner frequency range.

The corner frequency setting is adjusted by the
Underfrequency control (potentiometer). Clockwise rotation
of the Underfrequency control increases the corner
frequency and counterclockwise rotation decreases the
corner frequency. If user adjustment of the factory-set
potentiometer is desired, follow the Preliminary Setup and
System Startup procedures.

INSTALLATION

Mounting

The BE350 controller may be mounted on the generator in
any convenient position. Figure 4 shows the mounting
dimensions. Dimensions are shown in inches with
millimeters in parenthesis.

The recommended mounting hardware is two #8 or M4
screws tightened to a torque of 9 inch-pounds (1 newton
meter). Nylon-lined locking nuts are recommended when
installing the controller with loose hardware.

Connections

BE350 controller terminals consist of quarter-inch, quick­connect tabs.

Figure 5 shows typical connections for the BE350
controller.

OPERATING PROCEDURES

The following procedures can be used when adjusting the
BE350 controller. Symptoms caused by certain generator
system problems or a faulty controller are included along
with suggested remedies.

CAUTION

Meggers and high­not be used. Use of such equipment could damage
the semiconductors contained in the controller.

Preliminary Setup

Complete the following steps before proceeding with
system startup.

1. Verify that the BE350 specifications conform with the
requirements of the generator system.

2. Ensure that the controller jumpers are positioned as
follows.

a. If a remote voltage adjust rheostat will not be

used, ensure that the Voltage Adjust Rheostat
jumper is connected across terminals 6 and 7.

b. If a 55 hertz corner frequency for a 60 hertz

system is desired, connect the Corner Frequency
jumper to the 60 Hz terminal. If a 45 hertz corner
frequency for a 50 hertz system is desired,
connect the Corner Frequency jumper to the
50 Hz terminal.

3. Ensure that the connections between the generator
system and the controller are correct.

4. Set the BE350 Voltage control fully counterclockwise
and the remote voltage adjust rheostat (if used) to the
center position.

5. Adjust the BE350 Stability control fully clockwise. This
provides the most stability and the slowest response.

6. If user adjustment of the Underfrequency control is
required, start with the potentiometer adjusted to the
fully counterclockwise position. Then, slowly adjust the
potentiometer clockwise to set.

System Startup

NOTE

Use an average­readings.

1. Perform the steps under Preliminary Setup.

2. Start the prime mover and bring it up to rated speed.
Generator voltage should build up.

3. Slowly adjust the BE350 Voltage control (or remote
voltage adjust rheostat) until the generator voltage
reaches the nominal level.

If the voltage does not build up to the rated level,
check the generator output for excessive load or a
short-circuit.

4. Apply and remove the generator load to verify stability.

If the generator responds too slowly or hunts
(oscillates), check the generator output for excessive
load or a short-circuit. Adjust the controller’s Stability
control with no load applied.

5. Check regulation under normal operating conditions. If
the regulation is poor:

a. Verify that the prime mover is operating at rated

speed.

b. Verify that the voltmeter is connected to the same

point as the controller sensing.

c. Use an average-sensing voltmeter (not an rms-

sensing voltmeter).

Publication

9166800893

Revision

Date

-

09/10

Page

2 of 4