BENSHAW RediStart EXEXMVRMX3 Series, Руководство пользователя

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Optional RTD Module Troubleshooting
8.12 RTD Module Troubleshooting
If the system includes optional RTD Modules, verify that all three LED indicator lights on the remote RTD units are toggling. There is a
TX (Red) & RX (Green) that will flash when the module is communicating and a Status (Green) light that blinks once per second. The
RTD module connects to the top of the MX
3
I/O card. There should be a Red TX and Green RX blinking in the J1 connection where the
two devices connect.
z
NOTE: For more details see Remote RTD Module Manual Pub. # 890010-00-X.
Remote
RTD Module
SPR-100P
TX (Red) Transmit Data Flashes when module is transmitting data.
RX (Green) Receive Data Flashes when module is receiving data.
Status (Green) Operation On when module measures RTD.
Maintenance
8.13 VACUUM contactor and Power Pole assembly Maintenance
General:
During the life of the EXMVRMX
3
, it may be necessary to perform routine maintenance on the unit. The following sections describe
how to change a VACUUM contactor and power pole assembly.
Attention:
Servicing energized equipment can be hazardous. Sever injury or death may result from electrical shock or burn due to improper use of
the equipment. It is recommended that the equipment is disconnected and a lock out command is enacted prior to any maintenance that is
performed. Remember to allow any stored energy in the capacitors to dissipate. If it is necessary to work in the vicinity of energized as
well as de-energized equipment, the work practices of NFPA 70E, Electrical Safety Requirements for Employee Workplace, must be
followed.
Periodical Inspection:
Benshaw controls require only periodical inspections. These inspections can be visual for physical traces of dust, dirt or visible damage.
Circuit boards should be physically tested to ensure that all the cables are connected properly.
Remember cleaning solvents should not come in contact with circuit or PC boards.
If filters or blowers are used, they should be cleaned or replaced as specified in the NEMA Standards Publication No. ICS 1.1 - 1987
Static:
While performing maintenance on the EXMVRMX
3
, certain preventative measures must be taken when handling or touching static
sensitive components in the enclosure.
Most circuit boards and SCRs can be damaged by Electro-Static Discharge (ESD). If persons make contact with an ESD sensitive
component during maintenance, they must be grounded. Grounding should be accomplished with a wrist strap which is connected to an
approved ground.
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8 - TROUBLESHOOTING & MAINTENANCE
Figure 56: RTD Module (SPR-100P)