SyriXus Series Pumps Installation and Operation Guide
Section 9 Pump Maintenance, Troubleshooting, and Servicing
9-5
EAR99 Technology Subject to Restrictions Contained on the Cover Page
9.6.2 ANALOG INPUTS
Displays the values of all analog inputs in volts. In the left column,
with all connected pumps at zero pressure, the pressure readings
should be near zero. Readings for pumps not connected are mean-
ingless.
After the initial reading, pressurize the pump and then observe the
test screen once more to verify that the value for that pump has
increased.
The right column represents the four analog input terminals on the
rear panel of the controller. For any terminal shorted to ground, the
value should read a steady zero.
Figure 9-2
Analog input diagnostic screen
Press
EXIT
(
D
) to return to the diagnostic menu.
9.6.3 KEYPAD TEST
The screen will briefly display the name of each key pressed. Press
EXIT
(
D
) to return to the diagnostic menu.
9.6.4 MOTOR
CONTROL/LIMITS
Tests the digital position controls.
From the Limits menu, you can set minimum and maximum flow rate
limits and pressure limits, as well as the maximum flow rate in Con-
stant Pressure Mode. High and low limits cannot exceed pump specifi-
cations.
The pump stays within these limits by means of a flag that moves up
and down with the ball nut assembly, and two optical sensors at the
top and bottom of the tower side plate as shown in Figure 9-3.
When a sensor is interrupted, it has a logic 1; when it is uninter-
rupted, it has a logic 0. Therefore:
• Upper limit 0, Lower limit 1
• Upper limit 1, Lower limit 0
• Upper limit 0, Lower limit 0 = Cylinder is partially full
• Upper limit 1, Lower limit 1= Illegal state
An illegal state can indicate failure of one or both sensors. The con-
troller display will toggle immediately between
CYLINDER
FULL
and
CYLINDER
EMPTY
when you press
REFILL
or
RUN
(the pump will not
run).
Gnd
A = XX.XXXX
ACC1 = XX.XXXX
B = XX.XXXX
ACC2 = XX.XXXX
C = XX.XXXX
ACC3 = XX.XXXX
D = XX.XXXX
ACC4 = XX.XXXX
EXIT
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