Section 4 — Wiring the Hardware
23
4.5
Connecting Cable Assemblies to Backplanes
The safe area signals between the backplane and the 3500 Monitoring System are
connected using cable assemblies. The cable assembly type is determined by the 3500
Monitor (3500/25, 3500/40, 3500/42, 3500/44 or 3500/50) and backplane (Vibration or
Keyphasor) combination.
The following table shows the 3500 Monitor, Cable, Backplane and Transducer
combinations that can be used with the 3500 Galvanic Isolator Interface.
3500 Monitor
Cable
Backplane
Transducer
Type
Channel
#
Type
Type
Vibration
Transducer
Interface #
Type(s)
3500/25
Keyphasor
*
1 & 2 (top)
or
1 & 2 (bot)
Keyphasor
p/n 141708
Keyphasor
p/n 141660A02
1 & 2
or
3 & 4
Proximitor
3500/40
Proximitor
*
1,2,3 & 4
Vibration
p/n 141707
Vibration
p/n 141660A01
1,2,3 & 4
or
5,6,7 & 8
Proximitor
3500/42
Proximitor
/Seismic*
1,2,3 & 4
Vibration
p/n 141707
Vibration
p/n 141660A01
1,2,3 & 4
or
5,6,7 & 8
Proximitor
or
Accelerometer
3500/44
Aeroderivative*
1,2,3 & 4
Aero.
p/n 141710
Vibration
p/n 141660A01
1,2,3 & 4
or
5,6,7 & 8
Accelerometer
Interface
(Velocity only)
3500/50
Tachometer*
1 & 2
Vibration
p/n 141707
Vibration
p/n 141660A01
1 & 3**
or
5 & 7**
Proximitor
* I/O Module type must be External Termination
** 3500/50 Tachometer: Positions 2 & 4 or 6 and 8 not available.
The 3500 Field Wiring Package shows how to connect the 3500 Monitors to the
backplanes and how to identify the Vibration Transducer Interfaces to which the safe
area and hazardous area field wiring is attached.
The cable assemblies have different connector types at each end, namely, 90-deg
cable entry and 45 deg cable entry. The 90 deg cable entry connector connects to the
3500 Monitor and the 45 deg cable entry to the backplane. A 45-deg cable entry is used
to ensure that there is sufficient spacing between hazardous and safe area field wiring
and enable easier installation.
The cable assemblies, method of installation and cable pin out diagrams are shown
below.
