Viconics VC3000 Installation Manual - Manual (Page 4)

4 VC7300 Series-Installation Guide
C
OMMUNICATION
W
IRING TO
VTR73
XX
A
T
ERMINAL
E
QUIPMENT
C
ONTROLLER
Only one VC3xxxX relay pack with remote monitoring inputs can be used under a single
VTR73xxA controller. All other slave units must be either VC3xxxX relay pack(s)
WITHOUT remote inputs. A maximum of 10 VC3xxxX relay packs can be used for a
single VTR73xxA terminal equipment controller.
From the VTR73xxA to the first VC3xxxX
o Existing or new field wires
o 3 minimum required 14-22 Ga solid or stranded. Shield not necessary. 7
From the first VC3xxxX to the controller to all other VC3xxxX Relay Pack(s)
o Existing or new field wires
o 2 minimum required 14-22 Ga solid or stranded. Shield not necessary.
o Connect only common and 2 Tx / Rx communication