6 Channel Temperature Monitoring System (RTD Based- Strap On Collar)

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					                                                   1701A
     6 Channel Temperature Monitoring System
          (RTD Based– Strap On Collar)

                                            M od el 1 731 A
                                      RT D Tra nsm itte r m o du le
   U p to 6 RT D C ha n nels            an d co llar assem bly
  sp ecify -2 0 to 16 0 de g C                                             M o del 174 2A                    N em a 12 bo x
                                         (co unter b ala nce d
     or 20 to 6 00 d eg C                    oth er sid e)




                                                                                                                 O p tio n al
                                                                                                             4-2 0m A outp ut
                                                                      S trap on colla r                           bo ard
                                                                       for up to 6 0”
                                                                        an d sp eed s
                                                                      be low 500 rp m




                         S trap on colla r
                      to m ou nt tran sm itte r                                               90 88 8-00 4
                          an d an te n n a                                                    H an d he ld
                                                                                             pro gra m m er
                                                                                             (1 req ’d p er
                             M o del 1711 A                                                 cu sto m e r site)
                          A nten na P S U un it




The 1701 Systems are designed as safety instruments for large motors (350 HP and larger). The
Systems monitor 6 customer set temperature points, using RTD’s (see 1705 and 1706 for
thermocouples) and provide an alarm for over-temperature conditions. The system can be
configured to shut down the motors. With modification the systems can monitor ground fault
and/or diode fault.

The Model 1701 System scans multiple Resistance Temperature Devices (RTD’s) installed
within the rotor windings or the starter bars providing data on minute changes in thermal
condition of the motor. Reliable temperature monitoring of the windings is key to smooth
operation. Overheating is a clear signal of an impending problem.
This system monitors 6 rotor winding temperatures simultaneously, displays all 6 rotor tempera-
tures simultaneously and will indicate any channel with a temperature greater than a program-
mable alarm set point. The alarm feature has a relay output. The non-contact transmission
method means no-fault path from the rotor to ground exists.