Eagle Microsystems RA1000 - Manual (Page 18)

18
SETPOINTS
The RA-1000 has CL
2
residual high and low relay (alarm) outputs. Press ALM from the
RESIDUAL SETUP screen. Select either the LOW or HIGH set point. Use the up & down
pushbuttons to set the trip point and press set to store the new value. To disable a set point, enter a
zero value. A low set point is activated when the CL2 residual falls to or below the set point and is
deactivated when the CL2 residual rises above the trip set point plus a 0.10 (0.010) ppm(mg/l)
hysteresis. A high set point is activated when the CL2 residual rises to and above the high trip point
and is deactivated when the CL2 residual falls below the set point minus a 0.10 (0.010) ppm(mg/l)
hysteresis.
When an alarm occurs, a message appears in the main run screen indicating the exact alarm. One
now has two options:
IGNORE the alarm and de-energize the associated relay indefinitely.
CANCEL the alarm and de-energize the associated relay for 10 seconds and then reactivate the
alarm is the situation has not been resolved.
LOW 2.00 ppm
UP DWN
SET
HIGH 10.00 ppm
UP DWN
SET
CELL RANGE
To set the range, press RNG in the residual setup screen. There are two ranges set by S2 which is
located on the RA-1000 MAIN board.
RNG 0-10.00 ppm
UP DWN
SET
RNG
S 2
P O S I T I O N
Scales the 4-20mA analog output
Value X.XX A 0 to 1,2,3,5,10, and 20 value selections (use the up and down pushbuttons
to select)
Value X.XXX B 0 to 0.1, 0.2, 0.3, 0.5, 1, and 2 value selections (use the up and down
pushbuttons to select)