Viconics VC3000 Installation Manual - Manual (Page 5)

5 VC7300 Series-Installation Guide
Possible network wiring topology
The VTR7300 to VC3000 transformer relay pack can use any network wiring topology as
required or based on topology of existing wires.
VC3
XXX
LED O
PERATION
Condition of the status LED
On/off LED vs. time (normal operation)
Condition of the Status LED Cause Solution
 2 short blinks
No communication between
the VTR73xxA and the
VC3xxxX relay pack. The
VC3xxxX Relay Pack will
resume its output “no
communication active” status
Check communication
wiring and or power
cycle the controllers
 2 short blinks and a
longer blink
Normal communication
between the VTR73xxA and
the VC3xxxX relay pack.
N/A
0.2 2.5 0.6 0.4 0.0 1.0 5.0 sec
Power On
Online to
VTR73xxA