Category: Industry Trends

Synopsis

The VMIVME-4941 is a four-channel synchronous/rotary digitizer designed for use in modern high-performance commercial and industrial control systems.

Applications include motor control, radar antenna position information, CNC machine tools, robotic axis control and process control.

The VMIVME-4941 features four versatile, state-of-the-art synchronous or resolver digitizers with programmable resolution and bandwidth.

Programming allows selection of 10-, 12-, 14-, or 16-bit resolution with options for accuracy of +1 LSB (+4 LSB differential linearity) over two minutes.

Resolution programming combines the high tracking rate of a 10-bit converter with the accuracy of a 16-bit converter.

The four-way resolver digitizer board has functional test capability for operational verification of all resolver mixing modules and VMEbus control logic.

The user can provide input resolver test signals for board testing via the P2 VMEbus expansion connector.

The front panel fault LEDs are illuminated at power-up and can be programmed to go out after successful diagnostics.

The front panel status LEDs also indicate signal loss and error fault levels.

Front Panel Fault LED – If an error condition occurs during a board diagnostic test, a software-controlled LED is available to visualize the fault.

This LED is illuminated at power-on reset and can be extinguished under program control.

Built-In Test (Resolver Option Only) – Requires the user to provide a resolver input on the P2 connector for loopback testing.

The loopback test is for single-ended signal input operation only. Note that the 11.8 V signal input option can be operated in direct input mode via a jumper.

Status LEDs are also provided to indicate signal loss and error levels for each channel.

The accuracy of the loopback test is limited (20 LSB) because the internal DC from the channel zero resolver is not available.

Loopback test accuracy is limited (20 LSB) because all four channels use the Channel Zero Resolver module’s internal DC reference voltage during built-in test runs.

Product Description

Цифровое реле GE Multilin 269PLUS-10C-120

The 269PLUS-10C-120 was released in the GE Multilin 269 PLUS motor management relay series.

It is a standard model that includes all of the basic features and protection offered by this family of relays.269 PLUS relays are designed for AC motor protection.

With proper installation and configuration, they can be integrated into systems that protect associated mechanical systems as well as motors and operators.

For example, when a GE Multilin meter is used with the 269PLUS-10C-120. power and voltage can be monitored, as well as the values used by the relay to provide additional protection features.

A feature of the 269PLUS-10C-120 GE Multilin relay is the storage of relay setpoints and various values in non-volatile memory.

Setpoints, “learning” parameters, pre-trip values, and statistical records remain unchanged even if control power is lost or otherwise removed.

Stored values include hours of operation, total number of motor starts, number of relay trips, and more.

The 269PLUS-10C-120 also features a built-in firmware self-test to continuously check relay operation.

If the self-test program detects a fault, an alarm indicator is triggered.

The GE Multilin 269 PLUS relay offers flexibility through a custom curve feature that allows the user to enter their own breakpoints if one of the eight standard overload curves is not appropriate.

In addition, there are multiple RTD input sensor types to choose from, as well as multiple control voltage options.

RTD type and control voltage are the two specifications indicated in part number 269PLUS-10C-120.

The 10C refers to the RTD input. In this model, the sensor is a 10-ohm copper RTD. The control voltage is labeled 120. indicating that this GE relay is a 120 VAC/125 VDC model.

These relays are available in various combinations of RTD type and control voltage. If the 269PLUS-10C-120 does not meet the exact needs of your application, several other 269 PLUS models are in stock.

Features

– 32 optically coupled outputs

– 32 optically coupled inputs

– High isolation potential – 1kV continuous – 35kV pulsed

– 8-bit, 16-bit, 32-bit data transfer

– Standard data or short I/O addressing A16 or A24

– Voltage-sensing or contact-sensing inputs

– Input range 5 to 125VDC

– 300mA sink current output

– Maximum output voltage 50V

– Inputs and outputs support built-in testing

Functional Features

Board Features: The board has 32 optically coupled inputs and 32 optically coupled outputs.

The outputs and inputs have built-in testing and provide continuous 1kV system isolation for the VME backplane.

Compliance The board conforms to the VMEbus specification ANSI/IEEE STD 1014-1987 IEC 821 and 297 with the following helpers:

a24/a16. d32/d16/d08 (eo)

Slave devices using the following address modifiers:

3D, 39/2D, 29.

BUILT-IN TEST: The VMIVME-2536 supports both on-line and off-line built-in tests (BIT).

By setting a bit in the Control and Status Register (CSR), the input will enter test mode.

In test mode, data placed in the on-board test registers is read through the input port instead of field data.

The address of the test register is the same as the address of the input data port.

The address of the test register is the same as the address of the input data port, so testing can be accomplished by simply writing to and reading from the input data port. This feature can be used for both on-line and off-line testing.

The contents of the output data register can be read at any time, thus supporting online testing. The outputs can be put into offline test mode by setting a bit in the CSR.

In offline test mode, all open collector outputs are disabled. Data patterns can then be written to or read from the output registers to perform tests without affecting the outputs.