Pinnacle Systems Universal Safety Controller HUB - Manual (Page 20)

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IIC bus failure IIC bus failure
Master Slave
Master or Slave internal communications with external
devices lost. Could be fault circuits.
A/D Failure A/D Failure
Master Slave
Master or Slave analog voltage readings out of
specification.
Master Fault Slave Fault
Shut down all Shut down all
Master or Slave shut down for unknown reason.
K1 Relay K2 Relay
Not Energizing Not Energizing
K1 or K2 Relay Fault condition. Not turning ON when
asked to. This is the Safety Relay for Channel C. This
could indicate a faulty circuit. K1 is monitored by the
Slave, K2 is monitored by the Master.
K1 Relay K2 Relay
Stuck ON (fault) Stuck ON (fault)
K1 or K2 Relay Fault condition. Appears as ON, and will
not turn OFF. This is the Safety Relay for Channel C. This
could indicate a welded relay contact or faulty circuit or
fault relay. K1 is monitored by the Slave, K2 is monitored
by the Master.
K3 Relay K4 Relay
Not Energizing Not Energizing
K3 or K4 Relay Fault condition. Not turning ON when
asked to. This is the Safety Opto Relay for Channel D.
This could indicate a faulty circuit or the fuse is blown. K3
is monitored by the Slave, K4 is monitored by the Master.
K3 Relay K4 Relay
Stuck ON (fault) Stuck ON (fault)
K3 or K4 Relay Fault condition. Appears as ON, and will
not turn OFF (voltage appears on the D output). This is
the Safety Opto Relay for Channel D. This could indicate
a shorted Opto or faulty circuit . K3 is monitored by the
Slave, K4 is monitored by the Master.
Mstr On/Slv Off Slv On/Mstr Off
Dev#xx , Term#yy Dev#xx, Term#yy
A Device attached to the HUB has faulted out where the
Master indicated ON (B channel), but the Slave indicated
OFF (A channel), OR the Slave indicated ON (A channel),
but the Master indicated OFF (B channel). Check the
wiring of your Device# or the output from your device to
find the disparity between the A and B channels.
Mstr Off/Slv ON Slv Off/Mstr ON
Dev# ,Term# Dev# ,Term#
A Device attached to the HUB has faulted out where the
Master indicated OFF (B channel), but the Slave indicated
ON (A channel), OR the Slave indicated OFF (A channel),
but the Master indicated ON (B channel). Check the wiring
of your Device# or the output from your device to find the
disparity between the A and B channels.
False volt Fault
Dev# ,Term#
A 3 or 4 wire device# that requires a pulsed 24vdc output
from Channel A or B was checked as incorrect. This
maybe due to incorrect wiring or the device attached is
conflicting with the A or B output of the HUB.