![background image](http://html1.mh-extra.com/html/m-system/47dm/47dm_operating-manual_3112621113.webp)
113
47DM OPERATING MANUAL EM-9510-B Rev.6
Figure 1: P output
■
P OUTPUT ASSIGNED TO H ALARM OUTPUT
Display value
H alarm setpoint
L alarm setpoint
HH alarm output (hi)
L alarm output (lo)
‘HH’ indicator
‘P’ indicator
‘L’ indicator
HH alarm setpoint
LL alarm setpoint
H alarm output (hi)
LL alarm output (lo)
‘H’ indicator
‘LL’ indicator
(1)
(2)
(1)
(2)
(1) The P status in the range between the L and the H setpoints is output using the H alarm output. ‘H’ indicator does not
turn on.
(2) The H alarm output is not provided when the display value exceeds the H setpoint. However ‘H’ indicator turns on.
Figure 2: Latching alarm
■
OUTPUT LATCHED / MEASURING CONTINUED
■
OUTPUT LATCHED / MEASURING STOPPED
H alarm setpoint
L alarm setpoint
L alarm output (lo)
H alarm output (hi)
Power
Display value
(1)
Measured value
(4)
(1)
(2)
(3)
(4)
Display value
Measured value
H alarm setpoint
L alarm setpoint
L alarm output (lo)
H alarm output (hi)
Power
(1)
(4)
(1)
(2)
(3)
(1) The L alarm output is provided when the measured
value falls below the L setpoint. The output is held
even when it exceeds the L setpoint. The display
value corresponds to the measured value.
(2) When the power is turned off and restarted, the alarm
output is reset.
(3) The H alarm output is provided when the measured
value exceeds the H setpoint. The output is held
even when it falls below the H setpoint. The display
value corresponds to the measured value.
(4) The L alarm output is provided when the measured
value falls below the L setpoint. The output is held
even when it exceeds the L setpoint. The display
value corresponds to the measured value.
(1) The L alarm output is provided when the measured
value falls below the L setpoint. The output is held
even when it exceeds the L setpoint. The display
value is also held (measurement stopped).
(2) When the power is turned off and restarted, the
alarm output is reset. The display value corre-
sponds to the measured value.
(3) The H alarm output is provided when the measured
value exceeds the H setpoint. The output is held
even when it falls below the H setpoint. The display
value is also held (measurement stopped).
(4) The L alarm output is not provided when the input
falls below the L setpoint.