56 310531
Theory of Operation
Typical Dispense Cycle
DISPENSER
READY
Style Data
DISPENSE
Gun Open
PrecisionFlo
Metering Valve
Regulating
MEASURE
VOLUME
Style Data Valid
Robot
In Cycle
A
B
C
D
E
Table 9 — Dispensing Operation Timing
A
65 msec
Time between MEASURE VOLUME and DISPENSE
B
Gun on delay
The user sets either the gun on delay or regulation on delay timing.
The other delay is set to 0
C
Regulation on delay
The other delay is set to 0.
D
Gun off delay
The user sets either the gun off delay or regulation off delay timing.
The other delay is set to 0
E
Regulation off
The other delay is set to 0.
Fig. 34
1.
Robotic system controller verifies that the DIS-
PENSER READY signal is HIGH.
2.
Robotic system goes into cycle.
3.
Robotic system controller places the style informa-
tion on the style data bus
.
4.
Robot sets the MEASURE VOLUME signal HIGH.
5.
PrecisionFlo module reads the style bits from the
data bus. (Style Bits 0–5
)
Style bit data must be valid a minimum of 1 msec
before MEASURE VOLUME is raised, and must
remain valid for a minimum of 130 msec afterward
(Fig. 35).
Style Bit Data
Measure Volume
X
Y
1
130 msec
msec
Fig. 35
6.
PrecisionFlo module waits for DISPENSE signal
from the robotic system to start dispensing.
Continued on the next page.
