Masterflex 07550-10, 07550-17, 07550-20, 07550-22, 07550-30 Frequently Asked Questions

Frequently Asked Questions about the 07551-Series Masterflex® L/S®
Computer-Compatible drives and about the Masterflex WinLIN
Linkable Instrument Control Software (07551-70)

WinLIN Setup and Operation:

• Will my older Masterflex
Yes, the older drives, including model numbers 07550-10, -17, -20, -22, -30, and -50, will operate with the new
WinLIN.

• Will my older Cole-Parmer ServoDyne Mixers operate with the new WinLIN?
Yes the new WinLIN software will operate the older Servodyne mixers using the appropriate cabling. ServoDyne
model numbers 50008-00, 50003-00 and -05, and 50000-00 and -05 are compatible. Cable assembly 07550-64 is
required to connect the ServoDyne mixer to a PC or to a Masterflex L/S computer-compatible drive in series.
(Cabling sold separately.)

• Will my old setup files (.SET) work with the new WinLIN 3.x?
Yes, the new drive will operate using the old files. Even computers that have replaced the serial COM Port with a
USB port can use the old .SET files.

• How do I run the WinLIN software in Windows
Occasionally, some programs originally written for an older Windows operating system won’t run well in n ewer
versions of Windows. Follow these steps to emulate operation in an earlier version of Windows, such as
Windows 95.

- Right Click on the WinLIN icon

- Select Properties

- Click on the Compatibility tab

- Check “Run this program in compatibility mode for” and select Windows 95 from the drop down

• What is the best way to connect multiple drives in series (a “daisy chain”)?
The first drive in the series can be connected to the PC via the USB port (using a USB Type A to USB Type B cable
such as Cole-Parmer part no. 22050-60), or via the RS-232 In 9-pin serial port (using either an RS-232 / USB
Converter cable or a DB9(M) to DB9(F) serial cable). A DB9(M) to DB9(F) cable (such as Cole-Parmer part no.
22050-54) is then used to connect the remaining drives in series. Up to 25 drives (or Servodyne mixers) can be
“daisy chained” together.

• What is an RS-232 / USB Serial Converter cable (a.k.a. “dongle”)?
Most new computers and laptops come with only USB ports. Some will need to communicate with older serial
communication devices. An RS-232 / USB Serial Converter cable takes a USB command structure and converts it
to RS-232 through a chip mounted in a DB-9 connector. Additional driver software may be necessary for installation
on the PC / laptop. The driver software is usually included with the converter cable assembly. An RS-232 / USB
Serial Converter cable is available from Cole-Parmer as part no. 22050-58.

• How long can my USB connection cable be?
The USB Specification recommends that for USB 2.0 installation a maximum cable length of 5 meters (16 ft) is
used. See www.USB.org

• I am trying to interface my drive via the USB port on my PC and WinLIN is not recognizing the drive.
You need to install the USB driver that is written into the WinLIN V3.x program. Detailed instructions follow later in
this document.

®

L/S® computer-compatible drive work with new WinLIN 3.x?

®

95 compatibility mode?

.

Cole-Parmer 800-323-4340 847-549-7600 www.masterflex.com
Page 1 of 6

• Why did my WinLIN stop running?
There may have either been a power interrupt or you have scheduled tasks trying to run in the background on your
PC. These scheduled tasks should be disabled, consult your IT department or specialist.

Remote Control Operation:

• How do I get my drive to operate with an analog remote signal?
In the “REMOTE CONTROL MENU” Use “EXIT” to get back to the operating screen not the “LOCAL” field. The
“LOCAL” field is for operating via the keypad. Also be sure that the drive doesn’t have “START/STOP required
unintentionally set to yes, without the START/STOP pin closed.

• How do I scale the analog inputs and outputs on my drive?

1) Navigate to the Remote Menu via the “HOUSE” icon or the Main Menu; press ENTER key.

2) Navigate to the desired INPUT/OUTPUT; press ENTER key.

3) Screen will now display MIN settings.
a. Value for mA or V will be highlighted.
b. Press enter and this value can now be adjusted with the UP/DOWN/LEFT/RIGHT arrow keys.
c. After setting value, press ENTER and use DOWN arrow key and navigate to the speed/flow setting.
d. Value for speed/flow setting will be highlighted.
e. Press enter and this value can now be adjusted with the UP/DOWN/LEFT/RIGHT arrow keys.
f. After setting value, press ENTER key and then press the DOWN arrow key one time.

4) Screen will now display MAX settings.
a. Value for mA or V will be highlighted.
b. Press enter and this value can now be adjusted with the UP/DOWN/LEFT/RIGHT arrow keys.
c. After setting value, press ENTER and use DOWN arrow key and navigate to the speed/flow setting.
d. Value for speed/flow setting will be highlighted.
e. Press enter and this value can now be adjusted with the UP/DOWN/LEFT/RIGHT arrow keys.
f. After setting value, press ENTER key and then press the DOWN arrow key one time.

5) Screen will now display MID settings.
a. Value for mA or V will be highlighted.
b. Press enter and this value can now be adjusted with the UP/DOWN/LEFT/RIGHT arrow keys.
c. After setting value, press ENTER and use DOWN arrow key and navigate to the speed/flow setting.
d. Value for speed/flow setting will be highlighted.
e. Press enter and this value can now be adjusted with the UP/DOWN/LEFT/RIGHT arrow keys.
f. After setting value, press ENTER key and then press the DOWN arrow key one time.

6) EXIT will now be highlighted – Press ENTER and screen will return to REMOTE CONTROL menu.

7) Use DOWN arrow key to navigate to EXIT at the bottom of the menu.

If CURRENT or VOLTAGE inputs
If CURRENT or VOLTAGE outputs
previously accessed and drive not returned to LOCAL mode.

• I am having trouble inverting the scaling of the analog inputs and outputs.

The analog inputs are capable of being scaled with 0 VDC or 4 mA = full speed, and 10 VDC or 20 mA = 0 speed.
In the CURRENT or VOLTAGE input screens (See “REMOTE CONTROL” in your Operator’s Manual) the MIN
value refers to the analog signal and not to the value of the lowest RPM. Change the RPM in the CURRENT or
VOLTAGE input screen, not the mA or voltage.
For the CURRENT or VOLTAGE output screens change the analog voltage or current to invert the scaling value.
Note: Selecting Current Output will not put the user into REMOTE CONTROL MODE. Only selecting VOLTAGE

INPUT or CURRENT INPUT before EXITing will put the user in the analog input mode. Exit to the CONTINUOUS
run screen.

were accessed, the “HOUSE” icon will now be empty (no box inside).

were accessed, the “HOUSE” icon will be filled (box inside) unless inputs were

Cole-Parmer 800-323-4340 847-549-7600 www.masterflex.com
Page 2 of 6