Nordson-EFD-8040-Operating-Manual.pdf - 第18页
ValveMate 8040 Controller 18 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide. Initiate Connection (continued) End of Cycle Connection (EO…
ValveMate 8040 Controller
17www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
See page19 for a detailed Initiate Connection Schematic.
1····2 and 3····4 Channel Initiate
The 8040 can be initiated through a time cycle by the application of 5 to 24 VDC
to the 1 INIT or 3 INIT input terminals. A system set-up schematic is detailed on
page14. 2 INIT and 4 INIT input terminals are not used.
Alarm IN / OUT Connection
The ValveMate 8040 features an ALARM input and output circuits. The ALARM
IN can be activated through the connection of either the low air pressure sensor
(supplied), low level fluid float switch (if used) or other such device / accessory
that may be selected for ALARM purposes. ALARM switches are to be wired in
series and must be normally closed switches.
If no ALARM switch is being used, the ALARM IN positive (+) and
negative (-) terminals must have a jumper installed to disable the
ALARM feature.
The ALARM OUT circuit is a normally OFF electronic switch that can switch an
external 5–24 VDC circuit to an external signaling device or PLC input. Maximum
load is 100 mA, 5–24 VDC.
Initiate Connection
ValveMate 8040 Controller
18 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Initiate Connection (continued)
End of Cycle Connection (EOC)
Upon completion of a spray cycle, an open collector circuit closes and remains
closed until the next spray cycle. This circuit can be utilized to signal back to a
host computer, start another device in sequence or other operations that need
to be tied into the completion of the spray cycle. This circuit will close when all
spray activity has completed.
Upon closure, power from an external source is allowed to pass through the
circuit to operate a 5 to 24 VDC load or be monitored by the host machine
controls.
The load illustrated is a relay, but this could be any device that will operate
within the 5 to 24 volt range. Power consumption of the load must not exceed
250 mA.
24 VDC Output
Courtesy 24 volt DC 100 mA (maximum) can be used to provide power to EOC
and ALARM out circuits for signaling purposes. Also, can be used as a power
source for an indicator device or initiate signal through a contact closure switch
to the 4-channel Initiate circuit.
ValveMate 8040 Controller
19www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Initiate Connection Schematic
3 WAY, 2 POSITION
2 SOLENOID VALVES
24 VDC
5 W MAXIMUM, EACH
NEG. COMMON
SWITCH CLOSURES
5–24 VDC SOURCE
100 mA MAX.
COURTESY
SUPPLY 24 VDC
100 mA MAX.
VOLTAGE INITIATE
5–24 VDC
2.2 mA AT 5 VDC
15 mA AT 24 VDC
ALARM IN
NC SWITCH
10 mA MAX.
INPUTS
OUTPUTS
POWER IN
24 VDC
1.25 A MIN.