Status Relay Board

5420 or SENS 420

VERSIONS

CONNECTS TO

Multi I/O Board or Traffic Board

High Density Digital Board or Terminal Blocks

FUNCTION

Powered and driven by the multi I/O or Traffic board, this part has 8 independent relays that can be programmed to energize on a variety of DFR status.

Eight red LEDs at the front of the card indicate the status of the relays, whether the related relay is energized, or not. The first relay is wired for N.C. (contact closed when NO POWER is applied to the coil) operation while the other relays are wired for N.O. (contact closed when POWER is applied to the coil) operation.

A single Relay board is allowed per BEN DFR.

The current state of each relay may be viewed in the BEN 32 Status window.

During configuration of the BEN DFR, the functions of the 8 relays are assigned. An 'OR' mask field allows these functions to be assigned to multiple relays, or many functions to a single relay. Typically, the operation of the first relay is unique, as it is wired for a 'fail-safe' operation.

In Service:
Active when the software is operational and the configuration is correct.

IDLE mode:
The DFR is off-line (configuration, self-test...).

Acquisition Error:
This alarm indicates that a problem has been reported with an acquisition unit.

Start Bus:
This alarm allows the linking of a relay with a specific start bus.

Sensor Mask Bits:
This alarm can be linked to the operation of one or many sensors (see Sensor board: 5818 / 5820).

Operated:
This alarm indicates that a recording has been made, and is activated at the end of the acquisition, when the BEN is in the OPERATED state. The user can put the system back in the STANDBY state using the control panel.

Hard Disk 100% Full:
This alarm indicates that the Hard Disk Drive has been filled.

Hard Disk nn% Full:
This alarm indicates that the Hard Disk Drive has reached the programmed threshold. The alarm level can be programmed by the operator, during configuration.

Memory 100% Full:
This alarm indicates that Acquisition Memory has no more room for records.

Memory nn% Full:
This alarm indicates that the Acquisition Memory has reached the programmed threshold. The alarm level can be programmed by the operator, during configuration.

Printer Error:
This alarm indicates that the local printer is off line or out of paper, or powered off.

Over-Temperature in Control Rack:
This alarm indicates that the temperature in the control chassis has reached the programmed threshold. The threshold level is programmed (in degrees C) during configuration (This function is only available when the 5554-XX multi I/O PCB is installed).

Loss of Time Synchronization:
This alarm indicates that the external time sync is no longer valid (see also 5554 PCB) :

• when two synchronization pulses are missing or shifted
  
• after 1 hour without DCF 77 synchronization
  
• after 30 minutes without IRIG-B synchronization
  
  

JUMPER SETTINGS

None.

BOARD LAYOUT

PICTURES

420-00

NOTES

The relays can be programmed through the BENCFG program to be N.O or N.C.