getting started
SYNRAD FH Series Flyer Operator’s Manual Version 3.4
47
Connecting
The USB indicator next to the USB port on Flyer illuminates green when Flyer and the computer are both
powered up and connected via the USB Communication cable. The LED turns red when WinMark Pro is
communicating with Flyer.
It is not necessary to power down Flyer or your computer when connecting or disconnecting the USB
Communication cable; the USB protocol allows the ability to “hot plug” USB devices.
DB-25 User Interface connector
The DB-25 User Interface connector is only required when you are wiring input or output signals to the
marking head. To install the DB-25 connector, perform the following steps:
1
Locate the DB-25 User Interface D-shell connector (female DB-25) in the ship kit.
2
Wire your I/O cabling to the DB-25 User Interface connector as required for your installation. FH
Flyer’s I/O interface provides eight inputs, eight outputs, and a 15 VDC, 400 mA isolated power
supply. Refer to the Input/Output circuitry section in the Technical Reference chapter for detailed
information about I/O connections and electrical specications.
Important Note: In electrically noisy environments, use shielded, multi-conductor I/O cable as well
as a shielded backshell when connecting eld wiring to Flyer’s DB-25 User Interface
connector. To minimize ground loop noise, ground the cable shield at the user end
only; the cable shield at the User Interface connector should be left oating.
3
After your eld wiring is completed, connect the DB-25 User Interface connector to the 25-pin User
Interface connection on the side of the Flyer head.
Gas Purge port
A gas purge is highly recommended when operating the marking head in dirty or dusty environments.
Purging the Flyer head creates a slight positive pressure inside the optical scanner housing that prevents
vapor and debris from accumulating on internal optical surfaces.
To connect FH Flyer’s low-pressure Gas Purge port, perform the steps described below:
1
Connect nitrogen or breathing-grade air to the Gas Purge port using 1/4-inch plastic tubing.
2
Push the tubing completely into the tting and then pull the tubing lightly to ensure that it is locked
into position.
Note: To disconnect gas purge tubing, rst push and hold the tubing slightly into the tting. Next, push
the white tting ring evenly towards the tting and then pull the tubing free.
3
Set a purge pressure between 2–5 PSI. This setting provides just enough positive airow to prevent
dust or debris from entering the optical scanner/mirror area. If a owmeter is available, set a ow rate
of 30–60 standard cubic feet per hour (SCFH) at a pressure not to exceed 5 PSI.
When supplying gas to the Gas Purge port, use nitrogen or clean, dry air only; do not use any other gases
for purging. See Table 1-3 for gas purity specications.
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