Tyco MX4428, Technical Manual, Page: 66 / 134

MX4428 MXP Engineering / Technical Manual Document: LT0273
Device Information and Programming
Page 3-50 24 March 2006 Issue 1.5
3.24.3 MX4428 PROGRAMMING OPTIONS - VLC800
The only programmable items for the VLC800 are
1. The pre alarm threshold.
2. The source of the remote LED output.
3. The source of the onboard relay output and external relay output (they operate
together).
The VLC800 shares default values with the 814H, 814PH, and 814PHFL. However the alarm
threshold is fixed at 100 regardless of any default setting. The default pre alarm setting of 68
translates to 68% of the alarm value which although a suitable value, can be changed if
required.
Parameter Description Default
P0 Pre Alarm Threshold 68
192 plus value below
Value
Relay Control Remote LED
Control Resulting
parameter
0 Circuit Alarm Circuit Alarm 192
1 Circuit Alarm Relay Logic 193
2 Circuit Alarm Point Alarm 194
4 Relay Logic Circuit Alarm 196
5 Relay Logic Relay Logic 197
6 Relay Logic Point Alarm 198
8 Point Alarm Circuit Alarm 200
9 Point Alarm Relay Logic 201
P6
10 Point Alarm Point Alarm 202
192
AVF may be applied to the circuit the VLC800 point maps to.