Trebor SL20 CHAMPION - Manual (Page 9)

CHAMPION SL20 PUMP OPERATION / MAINTENANCE MANUAL PAGE 9
The PLC display is show in Figure 3-22. Please note the names of the different
areas of the PLC display.
Figure 3-22:
3.1.a The PLC outputs are shown in Table 2.
• Relay output 500 is a “fail safe”, normally open relay. It is equipped with
a 15 second delay, intended to identify pump operation.
• Relay 500 will disengage, (turn “OFF”) if the PLC does not recognize
alternating condition of the EOS inputs within the 15 seconds.
• The pump will require manual engagement by turning relay 17901
“ON” (see section 3.1.b).
• During initial start-up relay 500 will be “ON” or in the closed position (~15
seconds) while verification for EOS probe alternation is performed.
RLY
Output
Description Default
Value
500 Pump Operating - Normally open output OFF
Table 2: Customer PLC Output
3.1.b Changing a pump function listed in Table 3:
RLY Description Default
Value
17901 Pump On – Turns pump on and off On
17902 Auto Tune Mode – Enables the auto tuning feature of the
controller
Non manual setup requiring EOS probes. On
17903 Reset Auto Tune – Forces the controller to run an auto tune cycle Off
17904 Booster Mode – Enables booster mode disabling vacuum fill. Off
17905 Reset PM – Resets the pump maintenance cycle count Off
17906 N/A Off
17907 Reset to defaults – resets all data memories to default values Off
Table 3: PLC Internal Relays