Overview
VME 64x discrete input (DI) card is used for monitoring the different status signals. Field ground and system ground is isolated. This card receives 64 discrete input voltages in range of 16V to 40V.
VME 64x discrete input (DI) card is used for monitoring the different status signals. Field ground and system ground is isolated. This card receives 64 discrete input voltages in range of 16V to 40V.
| VME 64x Discrete Input (DI) Card | ||
|---|---|---|
| 1 | Bus Interface |
Bus : VME / VME 64x Compatible A24/D16 Standard slave interface Address selection through jumper (VME) |
| 2 | Inputs |
No. of input Channels : 64 nos. Isolation : Optical isolation, Isolation up to 1000V Input Spec : Nominal Voltage : 28V DC Logic High – > 16 V DC Logic Low – < 15 V DC Max. Continuous Voltage – 40 V DC Channel current (ON) – 5 to 8 mA per channel Protection : Reverse voltage protection Over voltage protection for Max. 40V DC 50V transitory peaks Input indication : LED indication on Front panel for each input. LED indicates the input status before isolation (Field side) LEDs. Illuminated when the associated input channel is ON |
| 3 | Termination |
Input Termination : Front connector (Fascia Panel) termination – all 64 inputs Rear connector (VME P2) termination – 46 inputs |
| 4 | Self Tests |
BIT : Force High / Force Low facility to test all the inputs from field side. Force high / Force low is done group wise (8 ch at a time) which allows testing field input related opto-couplers and corresponding TTL chips |
| 5 | Power Consumption |
5V @ 1A from VME Connector 3.3V @ 500mA from VME Connector 28V DC @ 1A from field Connector |
| 6 | Mechanical |
Single slot 6U (233.4 mm x 160 mm) Fascia Panel : Standard 6U / 4T Fascia panel with ejector facility 64 LEDs indicating input status on the Fascia Panel Input termination connector FAULT LED |
| 7 | Environmental |
Operating Temperature : -20 °C to +55 °C Storage Temperature : -40 °C to +85 °C Thermal shock : +55 °C to –20 °C (1hr Exposure) Humidity : 95% at 40 °C (8hr exposure) Operational Vibration : The unit will withstand vibration of 1.5G for frequencies in the range of 5–1500 Hz and acceleration of 1.5 m/sec² Operational altitude : 0 to 4160 m above sea level Altitude transport : 0 to 13000 m above sea level |
| 8 | Software | Device Drivers : OS / Non-OS based |
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