20 Digital input (30-60 VDC) Module-DI20B

Quick Information

20 bipolar optical isolated digital inputs for 30..60 VDC. The module is arranged in two sections of 10 inputs, with 2 common terminals for each section. Each section is isolated from each other with 2KV and to electronics. Input 0.. 9 and 10-19 provides counters, with up to 100 Hz counting frequency @ 50% duty cycle.

A user programmable debounce filter, in 1 ms units, is provided for each digital input, to filter out noise or mechanical relay bounce. This could also be used in combination with software counters, in case a low frequency mechanical contact is used for counters.

Before using the LB2 Series I/O Modules, read the LB2 User manual.
The Brodersen LB2 modules can be used with the RTU32N and RTU32M series products. The I/O modules are in two parts, a bottom part containing the backplane bus, and a top part containing the I/O board and logic. All LB2 I/O modules are hot pluggable and equipped with a 200 MHz processor to handle filtering, de-bouncing, and logic processing of I/O. Module firmware updates are managed by the RTU using Brodersen Worksuite. Use only genuine Brodersen bus cables for connection to Brodersen RTUs and extension of I/O module blocks.

The LB2 connection cables are made to handle the power and shielding requirements of the LB2 bus communications. The maximum overall length of the complete system is 30m. Each I/O module & Power supply module is calculated as 2cm. The cables are as their length indicates, e.g. UCC-610/100 cable is 100 cm. The maximum number of I/O modules on one LB2 Bus is 60

Digital Input voltage module type DI20B:

  • Input 0..9, 10..19  Activated 30-60 VDC
  • Input 0..9., 10-19 Deactivated Max 8 VDC

Digital Input current DI20B

  • Input 0..19  typical 3 mA @ 48 V

Input delay:

  • 100 µs typical.

Isolation:

  • 2Kv input to electronics, 1 minute.

Ambient temperature range:

  • -40°C to +70°C