SNR RDC-48-540-STD [7/15] Viii alert monitor interface

Page 7 of 15

Voltage DIP EN61000-4-11

Harmonic wave IEC61000-3-2

Voltage fluctuation & flicker IEC61000-3-3

VIII. Alert, Monitor & Interface

1. Alert

Alert or mute for commercial power or not, for fuse burned or not on two loads, for battery fuse burned or

not. Alert for output DC over/undervoltage, for over/undervoltage and current limiting of rectified module.

Set output DC over/undervoltage alert point:

Undervoltage alert point：46 ±1V recovery point ：48±1V；

overvoltage alert point：58±1V

2. Monitor

Monitor module sends alert/state information to supervisory control computer.

State signal : Alert or mute for commercial power or not, for fuse burned or not on two loads, for

battery fuse burned or not. Alert for output DC over/undervoltage, for over/undervoltage and current

limiting of two rectified modules. And the number & address of power modules

Data for Monitoring signal board

1）.Provide latest complete monitoring data for inquiry of supervisory control computer at any time. If no

inquiry, send alert signal to supervisory control computer.

2）.Alert for these states of output over/undervoltage or output current limiting, and send it to monitoring

board from rear board by relay contact which should be high resistance when operating and low resistance

when alert.

3）.Send out alarm in terms of relay contact through pin6, 7, 8, 9.

Rectified module alarms: Pin8—pin9 connected; it operates normally: Pin8--pin9 disconnected

AC blackout alarms: Pin8—pin7 connected; AC inputs normally: Pin8--pin7 disconnected

Battery undervoltage alarms: Pin8—pin6 connected; battery voltage recovers normally: Pin8--pin6

disconnected.

The relay’s maximum contact voltage is 60Vdc.

The relay’s maximum contact current is 300mA.

4）. No influence without monitoring single board. Under battery default, no influence for backup battery

charge/discharge management.

5）. Monitoring single board can save the latest 10 alerting information for inquiry of supervisory control

computer. Optimize saving information, for example: save information for commercial power blackout alert

instead of module output undevoltage alert because of power blackout.

6）. Supervisory control computer can get ride of inner information of monitoring module.