User's Manual for CM6G - Yokogawa

6-7POWERLampIGNITLampMEASLampALARMLampSTARTSwitchPOWERSwitchMETERSwitchSAFE EVSwitchSPANVolumeLOW ALVolume **: After diselectrifying, perform the adjustment by using SPAN volume and LOW AL volume.Figure 6.8 Front Panel AssemblyTable 6.1 Function and operation procedure for each switch of the calorie detectorName“POWER” switch“START” switch“SAFE EV” switch“METER” switch“SPAN” volume“LOW AL” volume“POWER” lamp“IGNIT” lamp“MEAS” lamp“ALARM” lampFunction and operation procedures• Power supply switch.• Turn to “ON”, power supply is supplied to the calorie detector and at the same time lightthe amps, “POWER” and “ALARM”.• After one push on “START” switch, the gas is supplied to the burner unit and operate theignition.• On the same time light the lamp “IGNIT”, the lamp “ALARM” is lit off.• If ignite within the preset time, the lamp “IGNIT” is lit off but light the lamp “MEAS”.• If not ignite within the preset time, the lamp “IGNIT” is lit off and light the lamp “ALARM”again.• Normally leave the switch at “SET” portion.• When adjust the differential pressure turn it to “RELEASE”.When the lamp “ALARM” is let off, alarm is released and solenoid valve of the gas line isopened.• If leave the switch position stay at “RELEASE” from “SET“ nothing happens, but in suchcase no alarm signal is given even when extinguishing the burner, so be careful of thismatter.• When the switch shows “RELEASE”, it doesn’t start even if the switch “START” bepushed.• Pressing this switch switches the indication of the indicator and the X5 display*1 of thecomputing station between “P.MEAS“ and “LOW AL“• The switching does not affect the final output and sequence action.• With this span volume you can adjust the output of the calorie detector to 1 - 5 V DC.• If turn to the right the span point becomes bigger.• The level set for the extinction alarm (lower alarm) is decided by this volume.• If turn to the right the alarm level becomes higher.• When the lamp is lit, power is being supplied to the calorie detector, differential pressuretransmitter, and temperature controller.• During the lamp is lighting, this is ready to be ignited.• During the lamp is lighting, it is under the measurement condition.• During the lamp lighting, alarm function is being given.(*1) The display range of X5 is 0 to 30.0 mV. “P.MEAS“ and “LOW AL“ indicate the following values.Signal NameDisplay Value“P.MEAS“ Thermocouple electromotive force 0 - 20.0 mV“LOW AL“ Flame extinction alarm threshold value 0 - 10.0 mV (= 0 - 100%)IM 11R02A01-02E