Littelfuse E7800 Series Manuel d'utilisateur télécharger pdf

Generator Control

Basic

E7800 SERIES

Motorized Potentiometer

ORDERING

NUMBER

VOLTAGE RPM POTENTIOMETER

E7800.00.xx 230 V-240 Vac 1.0 (50 Hz) 5 kΩ-1 turn

E7800.01.xx 220 V-240 Vac 2.0 (50 Hz) 5 kΩ-10 turn

E7800.02.xx 100 V-110 Vac 1.0 (50 Hz) 5 kΩ-1 turn

E7800.03.xx 24 Vac 2.0 (50 Hz) 5 kΩ-10 turn

E7800.04.xx 100 V-110 Vac 2.0 (50 Hz) 5 kΩ-10 turn

E7800.05.xx 220 V-240 Vac 2.0 (50 Hz) 5 kΩ-1 turn

E7800.09.xx 24 Vac 1.0 (50 Hz) 5 kΩ-1 turn

E7800.23.xx 24 Vdc 0.8-6 Adj. 5 kΩ-1 turn

E7800.24.xx 24 Vdc 0.8-6 Adj. 5 kΩ-10 turn

E7800.90.00 24 Vdc 0.8-6 Adj.

DC output voltage,

0-1.0 V (0-100%)

Description

The E7800 Motorized Potentiometer is typically used as an

interface between increase/decrease contacts and a device

requiring control/adjustments by an external potentiometer.

In generator control applications, the E7800 can be used as

speed trim of an electronic speed governor, interfacing the

synchronizer or the load sharer. It can also be used alone

for manual speed adjustment or speed trim of electronic

governors, or for remote control of generator voltage, power

factor and reactive load (E7800 connected to Automatic

Voltage Regulator (AVR)).

Ordering Information

Simpliﬁed Circuit Diagram

FEATURES BENEFITS

Wire-wound

potentiometer

Longer life expectation than carbon

potentiometers

Friction clutch

Motor can turn potentiometer against end

position continuously, without damaging it

Resistance from 100 Ω

to 10 kΩ

Wide range of potentiometers suitable for

any governor or AVR

24 V DC version with

Adjustable RPM

Simple ﬁne tuning possibility in regulation

applications

Built-in dust seal Long life expectation

Features & Beneﬁts

INDEX

“XX”

POTENTIOMETER

VALUE

00 5 kΩ (standard)

01 100 Ω

02 200 Ω

03 500 Ω

INDEX

“XX”

POTENTIOMETER

VALUE

04 1 kΩ

05 2 kΩ

06 10 kΩ

The E7800 cannot be used for both AC and DC. The unit must be speciﬁed to order.

Other voltages and combinations are available on request.

Indicate potentiometer value by replacing “xx” with digits per this table.

Speciﬁcations

Voltage range AC: 90-120%

DC: 75-125%

Consumption AC: 2.5 VA

DC: 2 W

Operating Temperature –15° C to +70° C

EMC CE according to

EN50081-1

EN50082-1

EN50081-2

EN50082-2

Approvals CSA, UL component recognition

Burn-in 50 hours before ﬁnal test

Weight 0.35 kg

Dimensions H 96 mm (3.8”); W 96 mm (3.8”); D 80 mm (3.1”)

Panel cut out H 92 mm (3.6”); W 92 mm (3.6”)

www.littelfuse.com/e7800

POWER

SUPPLY

INCR

DEC

E7800

(Motorized Potentiometer)

Rev: 4-A-050313

E7800 SERIES 1

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Littelfuse E7800 Series Manuel d'utilisateur

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