Nordson-EFD-8040-Operating-Manual.pdf - 第17页
ValveMate 8040 Controller 17 www.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…
ValveMate 8040 Controller
16 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
The 16 pin terminal strip includes four dispense valve initiate inputs, an alarm
I/O, an End of Cycle output, and a 24VDC courtesy power output.
The four initiate inputs can be connected in series, parallel, or to separate input
sources for independent valve control, or ability to disable a specific valve when
using “part in place” verification.
For a detailed connection schematic and instructions, refer to page17.
The alarm I/O is used to monitor air supply pressure and / or tank low level. This
I/O can be used to operate an audible alarm, or be connected to the machine
controls to shut off the machine if air pressure or tank level is low. In addition,
when the alarm is activated, the display will flash “ALr”
, indicating that air
pressure or tank level has dropped below minimum.
The End Of Cycle (EOC) feedback can send a signal back to the machine
controls, signaling when the dispense cycle is finished. Using this signal can
increase machine productivity by eliminating any delay after the dispense cycle
and also confirms a dispense cycle has occurred. 2 INIT and 4 INIT are non-
active inputs. As long as an initiate sequence is in progress on any channel, the
EOC circuit is open. Maximum load is 100 mA from 5 to 24 VDC.
Input / Output Connections
--------
ALARM
1 INIT.2 INIT.3 INIT.4 INIT. IN OUT EOC
OUTPUT
++++++++
24 VDC 0.1A
ALARM 24 VDC 0.1 A
1 INIT. 3 INIT. IN EOC2 INIT. 4 INIT. OUT OUTPUT
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.