GRASS VALLEY GV K-FRAME XP, Installation Planning Manual

Page: 67 / 87

GV K-Frame
XP
67
Although the diagram shows mechanical relays, the actual outputs are implemented with
solid state relays. The solid state relays are bidirectional; either polarity voltage can be
applied. If the switcher GPI/Relay Tally outputs are used to drive downstream DC relays, be
sure to install diodes across the relay coils to clamp inductive spikes. Shielded cable is
recommended for the connection from the switcher to the user Relay Tally system.
Relay Tally and GPI Output Specifications
Maximum current for any one output 1 amp AC/DC
Maximum current for any one common 2 amp AC/DC
Maximum off (open circuit) voltage between output and
common 60 Volts peak
Maximum voltage between any point and ground (chassis) 60 Volts peak
GPI In, GPI Out, Relay Tally Pin Assignments
Each GV K-Frame X Input/Output Module has a 37 pin connector for GPI and Relay Tally. The
connectors are arranged in left to right order on the rear of the Frame.
Input/Output Module Connectors
Module
Number
Signals
Module
Number Standard
13RU Frame
1 GPI In 1-4 6 GPI In 21-24
GPI Out 1-4 GPI Out 21-24
Relay Tally 1-16 Relay Tally 81-96
2 GPI In 5-8 7 GPI In 25-28
GPI Out 5-8 GPI Out 25-28
Relay Tally 17-32 Relay Tally 97-112
3 GPI In 9-12 8 GPI In 29-32
GPI Out 9-12 GPI Out 29-32
Relay Tally 33-48 Relay Tally 113-128
4 GPI In 13-16 9 GPI In 33-36
GPI Out 13-16 GPI Out 33-36
Relay Tally 49-64 Relay Tally 129-144
5 GPI In 17-20 10 GPI In 37-40
GPI Out 17-20 GPI Out 37-40
Relay Tally 65-80 Relay Tally 145-160