LINK Systems 5100-8 Tonnage & Analog Signal Monitor - Manual (Page 78)

Doc #: L-802-1110 Page 76 Rev. 02
4) If no wires are loose, check the high speed bus cable for damage to the outer jacket. If no
damage is found, then flex and bend the high speed bus cable section by section while checking
to see if the error returns. This should find most damaged cables with internal intermittently
open wires. Replace the entire section of cable if this is found.
5) Wiggle the high speed serial bus connector on the tonnage monitor module. If the error
reappears while doing this then the connector is likely damaged.
9.1.3 “No Resolver Info”
If the tonnage monitor is reporting “No Resolver Info” in “Module Status” at the bottom of the tonnage
monitor main screen, then the following process should be followed:
1) Check the press control or brake monitor “Present Running Status” and see if it says “HSB
Comm Failure”. If it does, it indicates that the 5000-12 card (if a System 5000 press control) or
the brake monitor is not communicating and is therefore not sending crank angle out on the bus.
If the unit is a brake monitor, check for power to the unit and that the high speed bus cable is
connected. If the unit is a System 5000 press control, check that the 5000-12 card is seated
properly in the rack, and that the high speed bus cable is connected. If the reset light on the
5000-12 card is blinking, then there is a hardware fault on the board.
2) Check the press control or brake monitor “Present Running Status” and see if it says “Resolver
Drive Fault”, “Bus Read Fault”, “R/D Read Fault”, “No Sin/Cos”, “Loss of Sin/Cos”,
“Resolver/Optic Fault”, or “Resolver/Optic Check Fault”. If it does, it indicates that the System
5000 press control or the brake monitor can not properly read the resolver on the crank shaft.
This could be a problem with the resolver cable, the resolver, or the hardware in the press control
or brake monitor.
3) The other possibility is a very short duration (less than 80 milliseconds) loss of communications.
Check the high speed serial bus cables carefully. Verify that the wires are properly terminated in
the connectors. Gently pull on individual wires where they go into the connectors to check for
loose or broken wires.
4) If no wires are loose, check the high speed bus cable for damage to the outer jacket. If no
damage is found, then flex and bend the high speed bus cable section by section while checking
to see if the error returns (this may also cause a “CTM F. Comm. Fail” error). This should find
most damaged cables with internal intermittently open wires. Replace the entire section of cable
if this is found.
9.2 “Press Running at Startup”
The tonnage monitor reports “Press Running at Startup” in “Module Status” at the bottom of the tonnage
monitor main screen when it powers up without its settings and sees that the clutch is engaged. This is
usually the result of a momentary power loss while the press is running. Make sure that the power
connector is securely plugged into the tonnage monitor and that the cable supplying power is ok. Gently
pull on individual wires where they go into the connector to check for loose or broken wires.