Manual

40 P/N 116390 rev. C
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: [phone]
MMD-TA-11B / MMD-TA-12B Muting Module
Instruction Manual
Troubleshooting and Maintenance
5.1 Troubleshooting Lockout Conditions
A lockout condition causes the OSSD outputs to turn OFF,
sending a stop signal to the guarded machine. A lockout
condition is indicated by the Red status indicator flashing and
an error code appearing in the Diagnostic Display. To clear a
lockout condition, the failure must be corrected, the associated
input must be properly cycled (if fault was due to an input
failure), or a reset routine must be performed.
To perform a reset, close the reset input, hold closed for at least
1/4 second, but no longer than 2 seconds, and then re-open the
input.
5.2 Diagnostic Display
The Module’s Diagnostic Display is useful for monitoring the
safeguarding system and for quickly diagnosing problems. See
Figure 5-1 for a list of status codes and their meanings, along
with recommended corrective actions.
5.3 Effects of Electrical Noise
The Module is designed and manufactured to be highly resistant
to electrical noise and to operate reliably in industrial settings.
However, serious electrical noise may cause a random lockout
condition.
Check the following if a noise-related error code is displayed and
other remedies have not cleared the problem:
• Sensor wires or input/output wires routed too close to “noisy”
wiring.
In extreme conditions, it may be necessary to use shielded
cabling or relocate the Module, mute devices, and cabling away
from the source of the noise.
5. Troubleshooting and Maintenance
5.4 Repairs
NOTE: Do not attempt any repairs to the Module. It contains no
field-replaceable components. Return the Module to the
factory for warranty repair or replacement.
If it ever becomes necessary to return a Module to the factory,
please do the following:
1. Contact the Banner applications engineering department at
the numbers or address listed on the front cover. They will
attempt to troubleshoot the system from your description of
the problem. If they conclude that a component is defective,
they will issue an RMA (Return Merchandise Authorization)
number for your paperwork, and give you the proper shipping
address.
2. Pack the Module carefully. Damage which occurs in shipping
is not covered by warranty.
WARNING . . . Shut Down Machinery
Before Servicing
The machinery connected to the Module
must not be operating at any time during this
procedure. You may be working close to a hazardous area
of your machinery while servicing the Module. Servicing
the Module while the hazardous machinery is operating
could result in serious bodily injury or death.