GARAN EWS-102 Додаткова інформація

Переглянути онлайн або завантажити pdf Додаткова інформація для Блок управління GARAN EWS-102. GARAN EWS-102 2 сторінки.
Також для GARAN EWS-102: Налаштування системи (4 сторінок), Налаштування системи (4 сторінок), Калібрування та налаштування (8 сторінок), Налаштування системи (4 сторінок)

Друкувати сторінку

EWS-102 CONTROL UNIT

Use of the Analogue Output Signal With Pre-Torque Anti-Rollback Systems

The EWS 102, when supplied with the optional analogue output, provides a 4-20mA signal that is proportional to the elevator load

including any attached compensation chain. This signal allows a suitably equipped drive to pre-torque the traction machine, minimising

any lift car rollback.

•

4mA = empty elevator (Zero)

•

20mA = elevator capacity (Full Load)

The EWS can be configured to "transmit" its output signal as either current or voltage. The output used will depend on the requirement of

the equipment that will "receive" the signal.

The standard 4-20mA output can be converted to give voltage output signals as follows:

•

1-5V output signal - connect a 250 ohm resistor across the "receiver" input.

•

2-10V output signal - connect a 500 ohm across the "receiver" input.

The loop power supply voltage needs to be high enough to include the voltage required by the "transmitter" (the EWS 102), and the voltage

required by the Receiver.

The EWS 102 is a type 2 isolated 2-wire loop circuit with a compliance voltage of 10V. The required loop power supply voltages are:

Receiver Input

4-20 mA

2-10V

Warning:

Care must be taken choosing the power supply for the recommended wiring scheme (see below). To avoid damage to the

EWS 102, any power supply connected to its power supply input must not exceed 24 Volts DC.

Wiring schematic

Rev 2.1 subject to alteration

Supply Voltage

12-30V

1-5V

15-30V

20-30V

Control

4-20mA

Signal

Loop

Cal

Load

Zero

Model EWS 102

Elevator Load Weighing Device

12-24VDC

Power Supply

Supplementary Information

SUPPLEMENTARY INFORMATION

EWS 102 4-20mA Load Weighing Device

Note

12V assumes 100 ohm max across receiver input

With 250 ohm resistor across receiver input

With 500 ohm resistor across receiver input

4-20mA Output to Elevator Drive Unit

Common Ground