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MODES OF OPERATION
ALARM/TIMER SELECTION

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 MAN (Flashing) - The  yellow  MAN  indicator  will  flash  when  the  control  outputs  are  OFF  as  a  warning  that  no control action is taking place.  (Models 2000, 2001 and 2003 only.) 2.4 ALARM/TIMER INDICATORS The two alarm indicators included in the upper left side of the display appear in red and illuminate "ALM" with either a 1 or 2 or both numbers when either or both alarms/timers are active.  The part number specifies each relay action and type. The two independent alarms, ALM1 and ALM2, consist of electromechanical relays with both NO and NC contacts on the rear terminals.  The alarm circuitry is active at all times.  The alarms continue to function even when the controller is in the TUNE mode or CAL mode.  Timer relay(s), Models 2000, 2001 and 2003 only, begin timing when the START key is pushed.  They automatically reset and time resets to zero when the controller stops or the STOP key is pushed. 2.5 OUTPUT INDICATORS The two output indicators included in the lower left side of the display appear in blue and illuminate the word "OUT" with either a I or 2 or both numbers when either or both outputs are ON.  (1=Primary output and 2=Secondary output). With ON/OFF and TPR (Time Proportional) control, the output indicator(s) will cycle ON and OFF as the outputs cycle ON  and  OFF.    With  analog  output  control,  the  output   indicator(s)   will   be   ON   when   the   output   is   ON   and   the measurement is outside the selected proportional band limits.  When the measurement comes within the band limits the numerical indicator will flash with an ON/OFF ratio proportional to the analog output. 2.6 KEYPAD The six key membrane type keypad on the front panel is the operator interface.  All control, tuning, and recalibration is performed using the keypad in conjunction with the display.  There are no internal jumpers, switches or pots to set or adjust. PARAM The PARAM DISPLAY key advances the displayed information one step at a DISPLAY time allowing you to examine and change various system parameters. The UP arrow key, when pressed, will INCREASE the numeric value of the displayed parameter.  Holding the key in will increase the rate of change YES of the parameter.  Also use this key to answer YES to a displayed question "?". ECLIPSE INSTRUMENTATION DIVISION page 3-1089







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