Woodward: CONTROL-LS-521-5/P1 8440-2150

Product number: 8440-2150

Manufacturer product number: 8440-2150

Description: Woodward: CONTROL-LS-521-5/P1. 5A, Version 2

Predecessor: 8440-1947

Application

The LS-5 Series has no internally isolated power supply.

For marine applications an EMI filter (i.e. SCHAFFNER – FN 2070-3-06) must be connected ahead of the power

supply input.

To meet the functional safety requirements of the application, the rules of marine classification independent protec

tive devices must be applied.

Clamp Fastener Installation

For installation into a panel door with the fastening clamps, please proceed as follows:

1. Panel cutout

Cut out the panel according to the dimensions in Figure 2-1.

Note: It is not necessary to drill the holes if the fastening clamps are used.

2. Remove terminals

Loosen the wire connection terminal screws on the back of the unit and

remove the wire connection terminal strip if required.

3. Insert screws in clamps

Insert the four clamping screws into the clamp inserts from the shown

side (opposite of the nut insert) until they are almost flush. Do not com

pletely insert the screws into the clamp inserts.

4. Insert unit into cutout

Insert the unit into the panel cutout. Verify that the unit fits correctly in

the cutout. If the panel cutout is not big enough, enlarge it accordingly.

5. Attach clamp inserts

Re-install the clamp inserts by tilting the insert to a 45° angle. (1) Insert

the nose of the insert into the slot on the side of the housing. (2) Raise the

clamp insert so that it is parallel to the control panel.

6. Tighten clamping screws

Tighten the clamping screws (1) until the control unit is secured to the

control panel (2). Over tightening of these screws may result in the clamp

inserts or the housing breaking. Do not exceed the recommended tighten

ing torque of 0.1 Nm (0.9 pound-force inches).

8440-2150

7. Reattach terminals

Reattach the wire connection terminal strip (1) and secure them with the

side screws.

Screw Kit Installation

In order to enhance the protection of the front to IP 65. it is possible to fasten the unit with a screw kit instead of

the clamp fastener hardware.

Proceed as follows to install the unit using the screw kit:

1. Cut out the panel and drill the holes according to the dimensions in Figure 2-3.

2. Insert the unit into the panel cutout. Verify that the unit fits correctly in the cutout. If the panel cutout is

not big enough, enlarge it accordingly.

3. Insert the screws and tighten to 0.6 Nm (5.3 pound inches) of torque. Tighten the screws with a cross

wise pattern to ensure even pressure distribution.

The phasor diagram is used from the System B view. Power factor is defined as follows.

+ Positive

Power Factor is defined as a ratio of the real power to apparent power. In a purely resistive circuit, the voltage

and current waveforms are instep resulting in a ratio or power factor of 1.00 (often referred to as unity). In an in

ductive circuit, the current lags behind the voltage waveform resulting in usable power (real power) and unusable

power (reactive power). This results in a positive ratio or lagging power factor (i.e. 0.85lagging). In a capacitive

circuit, the current waveform leads the voltage waveform resulting in usable power (real power) and unusable

power (reactive power). This results in a negative ratio or a leading power factor (i.e. 0.85leading).

Inductive: Electrical load whose current waveform

lags the voltage waveform thus having a lagging

power factor. Some inductive loads such as electric

motors have a large startup current requirement result

ing in lagging power factors.

Capacitive: Electrical load whose current waveform

leads the voltage waveform thus having a leading

power factor. Some capacitive loads such as capacitor

banks or buried cable result in leading power factors.

Different power factor displays at the unit:

i0.91 (inductive)

lg.91 (lagging)

c0.93 (capacitive)

ld.93 (leading)

Reactive power display at the unit:

70 kvar (positive)

Output at the interface:

+ (positive) -60 kvar (negative) – (negative