52Magtrol Model DSP7000 Dynamometer ControllerChapter5 – AlarmSystemSETUP • OPERATION5.6 global torque alarm5.6.1 inSTruCTionS for gloBal Torque alarM SeTup1. Starting from main menu, press ShIFT.2. Press SETUP button.3. Select TANDEM.4. Press SCALE I button to select “YES” and then press ShIFT.POWERBRAKE STATUS SET POINT SET POINT P I DTORQUE SPEED USER DISPLAYGLOBAL POWER TORQUE ALARMSXXX.XXKW XXX.XX NmFigure 5 –16 Global Torque Alarm SetupNoTE: global torque alarm is only enabled when Wb/Wb or Pb/Pb dynotandem configuration.5. Press MAx SPEED button and use and buttons and Decrease/Increase dial to setdesired global torque value.6. Press ShIFT 2 times to complete global Torque Alarm setup and return to the main menu.5.6.2 gloBal Torque aCTionIf torque is greater than the maximum setting the display will flash “gLobAL ToRqUE ALARM”(as indicated in Figure 5–9) The alarm relay will open, excitation current will hold at last value for3 seconds then drop to zero. Standby signal is not cycled5.6.3 T o reSeT gloBal Torque alarMPress any front panel button other than ShIFT. If the alarm condition is clear, the unit will returnto normal operation. Although not recommended, another option would be to disable the alarm byfollowing the alarm setup instructions in Section 5.6.1 – Instructions for Global Torque Alarm Setup.5.7 air flow alarm• Used to indicate a lack of air flow from a blower or air line• Only for use with Hysteresis Dynamometers• Monitored only when the brake is ON• Default is set in “OFF” mode5.7.1 inSTruCTionS for air flow alarM SeTup1. Starting from main menu, press ShIFT.2. Press SETUP button.3. Select DYNo.4. Select ALARMS. The display should appear as follows:
