Masterflex 7523-60, 7523-70, 7550-30, 7550-50, 77301-20 Instruction Manual

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OPERATING MANUAL:

PUMP DRIVES

NOTICE D’UTILISATION :

ENTRAÎNEMENTS DE
POMPES

BEDIENUNGSANLEITUNG:

PUMPENANTRIEBE

MANUAL DE OPERACIÓN:

PROPULSORES DE
BOMBAS

MANUALE DI ISTRUZIONI:

AZIONAMENTI

MANUAL DE OPERAÇÃO:

ACIONADORES DE
BOMBA

A-1299-0996

Edition 04

Model Nos.
Modèles nº
Modellnummern
Números de modelo
Modelli nº
Modelos N°

77301-23 Wall Mount Controller with 77301-21 Pump Drive and
77301-22 Benchtop Controller

7523 and 7550 Console Drive

7523-60
7523-70
7550-30
7550-50
77301-20
77301-30

1-800-MASTERFLEX (627-8373) (U.S. and Canada only)

䡲

11 [phone] (Outside U.S.)䡲(847) 549-7600 (Local)䡲www.masterflex.com

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i

PUMP DRIVES—MODEL NOS.

TYPE SYSTEM PUMP DRIVES CONTROLLER

Benchtop Modular 77301-20 77301-21 77301-22
NEMA Modular 77301-30 77301-21 77301-23
Std. Console, 600 rpm 7523-60 — —
Std. Console, 100 rpm 7523-70 — —
Console w/SIO, 600 rpm 7550-30 — —
Console w/SIO, 100 rpm 7550-50 — —

ENTRAÎNEMENTS DE POMPES—MODÈLES N

º

TYPE SYSTÈME ENTRAÎNEMENTS DE POMPES CONTRÔLEUR

Modulaire sur banc 77301-20 77301-21 77301-22
Modulaire NEMA 77301-30 77301-21 77301-23
Console standard, 600 tr/mn 7523-60 — —
Console standard, 100 tr/mn 7523-70 — —
Console avec E/S série, 600 tr/mn 7550-30 — —
Console avec E/S série, 100 tr/mn 7550-50 — —

PUMPENANTRIEBE—MODELLNUMMERN

TYP SYSTEM PUMPENANTRIEBE CONTROLLER

Tischmodell, modular 77301-20 77301-21 77301-22
NEMA, modular 77301-30 77301-21 77301-23
Std. Konsole, 600 U/min 7523-60 — —
Std. Konsole, 100 U/min 7523-70 — —
Konsole mit SIO, 600 U/min 7550-30 — —
Konsole mit SIO, 100 U/min 7550-50 — —

PROPULSORES DE BOMBAS—NÚMEROS DE MODELO

TIPO SISTEMA PROPULSORES DE BOMBAS CONTROLADOR

Modular de banco 77301-20 77301-21 77301-22
Modular NEMA 77301-30 77301-21 77301-23
Consola est., 600 rpm 7523-60 — —
Consola est., 100 rpm 7523-70 — —
Consola con SIO, 600 rpm 7550-30 — —
Consola con SIO, 100 rpm 7550-50 — —

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ii

AZIONAMENTI—

MODELLI Nº

TIPO SISTEMA AZIONAMENTI CONTROLLER

Modulare da banco 77301-20 77301-21 77301-22
Modulare NEMA 77301-30 77301-21 77301-23
Console standard, 600 giri al minuto 7523-60 — —
Console standard, 100 giri al minuto 7523-70 — —
Console con ingresso e uscita seriali,

600 giri al minuto 7550-30 — —

Console con ingresso e uscita seriali,

100 giri al minuto 7550-50 — —

ACIONADORES DE BOMBA - MODELOS NÚMEROS

TIPO SYSTEMA ACIONADORES CONTROLLER

DE BOMBA

Modular, de Bancada 77301-20 77301-21 77301-22
Modular NEMA 77301-30 77301-21 77301-23
Console Standard, 600 r / min 7523-60 — —
Console Standard, 100 r / min 7523-70 — —
Console com Entr. / Saída Serial, 600 r / min 7550-30 — —
Console com Entr. / Saída Serial, 100 r / min 7550-50 — —

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iii

(600 rpm)

(100 rpm)
(600 rpm)
(100 rpm)

(600 r/min)
(100 r/min)

(600 r/min)
(100 r/min)

iv

TABLE OF CONTENTS

Title Page

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

CONTROL/DISPLAY FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SETUP AND DRIVE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Automatic Start Enable/Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Maximum Flow Rate (“OTH(ER)” Tubing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

DISPENSE/COPY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Keypad Lockout Enable/Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

REMOTE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Remote Control Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

TROUBLESHOOTING AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Replacement Parts and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

PRODUCT RETURN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

TECHNICAL ASSISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

APPENDIX A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

SAFETY PRECAUTIONS

DANGER: High voltages exist and are accessible in the Digital PWM BLDC Drive. Use extreme caution

when servicing internal components.

WARNINGS: Tubing breakage may result in fluid being sprayed from pump. Use appropriate measures to

protect operator and equipment.
Turn drive off before removing or installing tubing. Fingers or loose clothing could get caught

in drive mechanism.

CAUTION: Power must be turned off before connecting the external remote control cable to prevent

damage to the drive.

CAUTION: To avoid electrical shock, the power cord protective grounding conductor must be connected

to ground. Not for operation in wet locations as defined by EN 61010-1.

Explanation of Symbols

CAUTION: Risk of Danger. Consult Operator’s manual for nature of hazard and corrective actions.

CAUTION: Risk of crushing. Keep fingers away from rotor while pump is in operation. Stop pump before

loading or unloading tubing.

CAUTION: Hot Surface. Do not touch.

CAUTION: Risk of electric shock. Consult Operator’s manual for nature of hazard and corrective actions.

WARNING: PRODUCT USE LIMITATION

This product is not designed for, nor intended for use in patient connected applications; including, but not limited to,

medical and dental use, and accordingly has not been submitted for FDA approval.

Trademarks bearing the ® symbol in this publication are registered in the U.S. and in other countries.

INTRODUCTION

The Digital PWM BLDC Drive controls the speed of MASTERFLEX®L/S®Pump Heads to provide flow rates from

0.10 to 3400 mL/min.
Mount up to 2 (600 rpm) or 4 (100 rpm) MASTERFLEX®L/S®Pump Heads and all MASTERFLEX-compatible pump

heads.

CONTROL/DISPLAY FUNCTIONS

Press keys to activate function.
Use up/down (▲,▼) arrow keys to correct/change a flashing display.
Press any key to enter new values.

A. DOWN ARROW (DECREMENT)—Decrease value of a flashing display.
B. UP ARROW (INCREMENT)—Increase value of a flashing display.
C. DISPENSE/COPY—Set dispense volume, copy amount, or time interval between dispenses and copies.
D. FLOW CONTROL—Set flow rate for selected tubing size. To change flow rate, press ▲ or ▼ arrow keys. (If pump

is running, its speed will change with new settings.)

E. CAL CONTROL—Refine built-in calibration, using a measured volume.
F. STOP/START—Stop/Start pump.
G. PRIME—Run pump at full speed to fill or clear lines.
H. DIRECTION—To change pump direction.
I. MODE SELECT—INT for internal control; mA for remote current control; V for remote voltage control.
J. SIZE—Press once to display maximum flow rate, press again to change tubing size.
K. POWER SWITCH—All settings are retained in memory.

1

7523 and 7550

77301

B

C

D

E

F

G

A

H

I

J

K

K

(rear of unit)

SETUP AND DRIVE OPERATION

1. On 77301 connect Motor Cable plug to mating receptacle on the Controller.

2. Mount pump head and load tubing. (See pump head manual.)

3. Connect power cord to Controller and grounded power line outlet.

4. Turn pump on and select tubing SIZE.
NOTE: If CAL LED is lit, that tubing size has been previously field calibrated. If LED is not lit, the drive is operating

with the built-in factory calibration. To clear a field calibration, press and hold the CAL switch until the CAL
light goes out. This will take about 3 seconds. To recalibrate for better accuracy, see Calibration section.

5. MODE selection (INTernal, mA, or V).

6. Select pump DIRection (CW or CCW).

7. PRIME and CALibrate the pump (if required).

8. Press FLOW key and watch display to set the flow rate with UP/DOWN (▲, ▼) arrow keys.

9. Press STOP/START key to begin pumping.
NOTE: When in INTer nal mode, pump will not restart automatically after a brownout or powerout condition unless

operator changes default condition. In mA or V modes, pump will start with a non-zero mA or V signal.

Automatic Start Enable/Disable (INTernal mode only)

Press and hold STOP/START on power-up. After five (5) seconds, display will change to all dashes. Then, while
holding STOP/START, press PRIME five (5) times. Display will flash "ON" or "OFF". Use UP/DOWN (▲, ▼) arrow
keys to set automatic start option. Press any other key to exit. When "ON" is selected, pump will start automatically
at power-up if it was "ON" when powered down.

CALIBRATION

Use only MASTERFLEX precision tubing with MASTERFLEX pumps to ensure optimum performance.

Use of other tubing may void applicable warranties.

1. Select correct tubing size and flow rate.

2. Press CAL, calibration volume appears and CAL LED flashes.

3. Press STOP/START, the pump will use its current calibration to dispense the specified calibration volume. The

pump will stop automatically.

4. Weigh/measure the sample.

5. Use UP/DOWN (▲, ▼) arrow keys to correct the flashing volume display.
NOTE: If the adjusted calibration is too great, "Err" will appear in the display. If this occurs, press the CAL key and

repeat the calibration procedure. The microprocessor will retain one special calibration value per tubing
size, even when power is turned off. The next calibration will replace the existing value.

6. Press SIZE to exit the calibration cycle.
NOTE: After calibration, the maximum and set flow rates will change due to the new calibration. If these change by

more than 10%, better accuracy can be obtained by setting the desired flow rate and repeating the
calibration.

Maximum Flow Rate (“OTH(ER)” Tubing only)

1. To set the maximum flow rate for non-standard pump heads or tubing sizes, select the OTHer tube size.

2. Press CAL and then FLOW. The maximum flow rate will then flash on the display.

3. Use UP/DOWN (▲, ▼) arrow keys to set desired maximum flow rate.

4. Press SIZE to exit.

2

DISPENSE/COPY

A first press of the DISP key results in the last entered dispense volume flashing on the display. The "mL"
annunciator will illuminate and flash. The UP/DOWN (▲, ▼) keys are used to change the dispense volume, if
desired. The STOP/START key then initiates deliver y of the set volume. The amount remaining to be dispensed will
be displayed. The dispense function is exited by pressing the SIZE key.

A second press of the DISP key causes the COPY annunciator to illuminate and flash. The STOP/START key is then
used to set the desired copy amount without the need to know the volume in specific units. A third press of the DISP
key enters the copy dispense mode. The COPY annunciator stops flashing. The STOP/START key is then used to
initiate delivery of the copied volume. The number of copies dispensed will be displayed after each dispense. After
9999 copies, the display will rollover to zero. The STOP/START key is used to pause the copy dispense during
dispensing; copy dispense can then be continued using the STOP/START key.

A fourth press of the DISP key results in the last entered interval between dispenses and copies being displayed.
The SEC annunciator will illuminate and flash. The UP/DOWN (▲, ▼) keys are used to change the time between
dispenses, if desired, from 1 to 9999 seconds. The STOP/START key then initiates delivery of the set volume, with
the drive automatically initiating a new dispense after each timeout. The remaining time will be displayed during
countdown. The STOP/START key is used to stop the dispense cycle. A time of 0 seconds (default) will require
initiation of each dispense through the STOP/START key or the Remote STOP/START contact closure.

Pressing the DISP key a fifth time exits this mode.

Keypad Lockout Enable/Disable

Press and hold FLOW. After five (5) seconds, display will change to all dashes. Then, while holding FLOW, press
PRIME five (5) times. The MODE LED will flash when the keypad is locked and the remote inputs are still functional.

REMOTE CONTROL

Selectable input (0–20 mA, 4–20 mA, 0–10V DC)
STOP/START; CW/CCW; PRIME via contact closure

Remote Control Setup

1. Place the power switch in the off position.

CAUTION: Power must be turned off before connecting the external remote control cable to prevent

damage to the drive.

2. Connect the cable from the external remote control to the DB-15 receptacle on the rear panel. On wash-down

units, connect to the mating receptacle on the bottom panel.

3. Select type of remote control input and output required as follows:

a. Press and hold the MODE key while turning the power switch to the on position. After two seconds, release

the MODE key. The initial display will show: “inP”. After two seconds, the display shows either 0–20 or 4–20.

b. Press the up (▲, increment) or down (▼, decrement) arrow keys to select between 4–20 and 0–20 for current

loop control.

c. Press the MODE key again. The initial display will show: “out”. After two seconds, the display shows either

0–10, 0–20, or 4–20.

d. Press the up (▲, increment) or down (▼, decrement) arrow keys to select between 4–20, 0–20, or 0–10 for

current loop or voltage output.

e. Press the MODE key to save the selection and exit.

4. Press the MODE key to select mode of operation. The LEDs indicate the selected mode. Select either mA or V.
NOTE: If using only remote STOP/START, PRIME and/or CW/CCW, the MODE can be set to any of the three

positions.

3

5. To adjust the voltage or current scaling for other than zero to full scale, press and hold the MODE key while

pressing the FLOW key. This display will show “LO” for 2 seconds and then a flow rate. Use the UP/DOWN (▲,
▼) arrow keys to set the minimum control level. Press the FLOW key again. The display will show “HI” for 2
seconds and then a flow rate. Use the UP/DOWN (▲, ▼) arrow keys to set the maximum control level. Press any
other key to exit. The same scaling will be used for both input and output levels.

NOTE: Tubing size should be selected before adjusting the voltage or current scaling.
Remote START/STOP

Use of the remote START/STOP is optional. It can be used to start the pump in
any mode by closing the input. In dispense or copy modes, only a momentary
remote START/STOP closure is needed to start or stop a dispense or copy. In
mA or V modes, there must also be a non-zero signal present. Once the remote
START/STOP has been closed to start the pump, opening it will stop the pump. In
mA or V modes, it is best to wire your START/STOP contacts in series with the
mA or V control signal to insure the pump will always be off when the
START/STOP contacts are open.

NOTE: Colors are those of Remote Cable,

Catalog number 77300-32.

4

START/STOPCW/CCWPRIME

INPUT

0-20mA; 4-20mA

INPUT
0-10V

RED/YELLOW

BLUE

GREEN

YELLOW

WHITE

ORANGE

BLACK

14

6

4

GREY

10

TACH OUTPUT

8

3

5

1

TAN

12

PINK

11

MOTOR RUNNING

N.O. CONTACT

RED/GREEN

13

MOTOR RUNNING

N.C. CONTACT

RED/BLACK

15

OUTPUT

0-20mA; 4-20mA

OUTPUT

0-10V

BROWN

VIOLET

RED

16

17

18

N.C.

N.C.

N.C.

7

9

2

TROUBLESHOOTING AND MAINTENANCE

Fuse Replacement

1. Place the power switch in the off position.

2. Disconnect the AC power input line cord from the receptacle.

3. Remove and check the fuse and replace if defective.

DB-15 pin configuration/with wiring scheme

A. STOP/START
B. CW/CCW
C. OUTPUT 0-20mA; 4-20mA
D. INPUT 0-20mA; 4-20mA
E. INPUT 0-10V
F. OUTPUT 0-10V
G. TACH OUTPUT
H. PRIME
I. MOTOR RUNNING N.O. CONTACT
J. MOTOR RUNNING N.C. CONTACT

A. 6-600 RPM GEAR ASSEMBLY (included in

service kit 07553-06 - Console Drive and
77300-01 - Modular Drive)

B. GASKET
C. 1-100 RPM GEAR SET (included in service

kit 07553-08)

D. GEAR CASE COVER ASSEMBLY

REAR PANEL – 7550-30, -50
A. IN-RS-232C IN-CONNECT CABLE FROM HOST COMPUTER

OUT-RS-232C OUT-CONNECT CABLE TO NEXT PUMP DRIVE

B. EXTERNAL RECEPTACLE
C. AUX 1 OUT; AUX 2 OUT, AUX IN
D. IEC 320 POWER ENTRY MODULE
E. T3.15A FUSE

CAUTION: Do not substitute.

5

7523, 7550 and 77301-22

REAR PANEL – 7523-60, -70

A. EXTERNAL RECEPTACLE
B. IEC 320 POWER ENTRY MODULE
C. T3.15A FUSE

CAUTION: Do not substitute.

SYMPTOM

A. Motor does not rotate. Display

does not light.

B. Motor does not rotate. Display

lights.

CAUSE

A. No power.

B1.Defective remote control.

REMEDY

1. Check fuse and replace if
defective.

2. Check that unit is plugged into a
live line.

3. Check connection of power cord.

4. Check the line cord for continuity
and replace if defective.

5. Return for servicing.

1. Place power switch in off
position.

2. Check that remote cable
connector is inserted fully into
the receptacle.

3. If motor still does not rotate,
select INT with the MODE key
and press the STOP/START key.

4. If the motor rotates, replace the
remote control with similar unit. If
motor does not rotate, return
drive for servicing.

6

REAR PANELS

A. EXTERNAL RECEPTACLE
B. MOTOR RECEPTACLE
C. IEC 320 POWER ENTRY MODULE/LINE CORD

A

BCDE

77301-23

A

BC

DE

77301-22

D. T3.15A FUSE

CAUTION: Do not substitute.

E. POWER SWITCH — ALL SETTINGS

ARE RETAINED IN MEMORY

Troubleshooting

ERROR MESSAGE

“Err 2”

“Err 3”
“Err 5”
“Err 12”

“Err 7”

“Err 10”
“Err 11”

“Err 14”

All other errors

CAUSE

Motor over-speed

Overload

Bad data. Operator parameters set
to default values.

Voltage out of range

Over temperature

Internal error or failure.

REMEDY

1. Clear by pressing any key.

2. Check for proper tube loading
and pump operation.

3. Return unit for repair if the error
persists.

1. Clear by pressing any key.

2. Check for proper tube loading
and pump operation.

3. Return unit for repair if the error
persists.

1. Clear by pressing any key.

2. Reprogram operator parameters.

3. Return unit for repair if the error
persists.

1. Clear by pressing any key.

2. Check that AC line voltage is
within specified voltage ranges.

3. Return unit for repair if AC line
voltage is correct and the error
persists.

1. Check for heat sources or
obstructions to cooling.

2. Check for proper tube loading
and pump operation.

3. Allow unit to cool. Clear by
pressing any key.

4. Return unit for repair if no cause
for overheating is found and the
error persists.

1. Clear (if possible) by turning
power off and on.

2. Return unit for repair if the error
persists.

Troubleshooting (cont.)

If an error message is displayed, refer to the following list for possible corrective actions you can take. If these do
not correct the problem, contact your dealer.

SYMPTOM

B. (cont.) Motor does not rotate.

Display lights.

CAUSE

B2.MODE not properly set.

REMEDY

1. Check that the MODE is set to
INT for operation with front panel
control or to mA or V for
operation with remote control.

2. If motor will not rotate, return for
servicing.

7

Cleaning

Keep the drive enclosure clean with mild detergents. Do not immerse.

Replacement Parts and Accessories

Description Part Number

Fuse-T3.15A 77500-25
Gear Service Kit (600 rpm - Console) 07553-06
Gear Service Kit (600 rpm - Modular) 77300-01
Gear Only (600 rpm) 07553-09
Gear Service Kit (100 rpm) 07553-08
Footswitch w/ DB-15 male 07595-42
Connector DB-15 male 07595-52
Dispensing Wand DB-15 male 07595-60
Hand-held remote control (NEMA)* 07592-83
Footswitch (NEMA)* 07595-43
Remote control cable, 25 ft. (NEMA)* 77300-32
* (For 77301-30 only.)

SPECIFICATIONS

Output:

Speed:

7523-60, 7550-30, 77301-20, -30 10 to 600 r/min
7523-70, 7550-50 1.6 to 100 r/min

Torque output, Maximum:

7523-60, 7550-30, 77301-20, -30 180 oz-in (13 kg•cm)
7523-70, 7550-50 360 oz-in (26 kg•cm)

Speed regulation:

Line ±0.25% F.S.
Load ±0.25% F.S.

Drift ±0.25% F.S.
Display: Four-digit, seven-segment LED
Remote outputs:

All units Voltage speed output (0–10V DC @ 1 kΩ min)

Accuracy: ±0.5% Full Scale

All units Current speed output (0–20 mA or 4–20 mA @ 0–600 Ω)

Accuracy: ±1% Full Scale
7550-30, -50 RS-232C
7550-30, -50 AUX 1 and 2 OUT (Contact closure 5A @ 115/230 Vrms)
7523-60, 7550-30, 77301-20, -30 Tach output (TTL, 100 to 6000 Hz, 50% duty cycle, 10 Hz/rpm)
7523-70, 7550-50 Tach output (TTL, 16 to 1000 Hz, 50% duty cycle, 10 Hz/rpm)
All units Motor running output

(N.O. & N.C. contact closure, 1A @ 28V AC/DC)

Input:

Supply voltage limits: Dual voltage—Automatically selected

90 to 130 Vrms @ 50/60 Hz, or

200 to 260 Vrms @ 50/60 Hz

Current, max.: 2.2A @ 115 Vrms, or

1.1A @ 230 Vrms

8

Remote Inputs:

All units STOP/START, CW/CCW, PRIME

(Contact closure)

All units Voltage input (0–10V DC @ 10 kΩ), ±50V common mode range

Accuracy: ±0.5% Full Scale
All units Current input (0–20 mA or 4–20 mA @ 250 Ω),

±50V common mode range

Accuracy: ±0.5% Full Scale
7550-30, -50 RS-232C
7550-30, -50 AUX IN (Contact closure)

Construction:

Dimensions (L × W × H):

7523-60, -70, 7550-30, -50 11 1/2 in × 7 11/16 in × 7 3/16 in (292 × 196 × 182 mm)
77301-22 9 3/4 in × 9 3/16 in × 5 1/16 in (248 × 233 × 129 mm)
77301-23 9 in × 11 in × 4 1/2 in (229 × 279 × 114 mm)
77301-21 8 7/8 in × 3 13/16 in × 4 3/4 in (226 × 97 × 120 mm)

Weight:

7523-60, -70, 7550-30, -50 15 lb (6.8 kg)
77301-22 4.0 lb (1.8 kg)
77301-23 9.4 lb (4.3 kg)
77301-21 9.5 lb (4.3 kg)

Enclosure Rating:

7523-60, -70, 7550-30, -50 IP 23 per IEC 529
77301-22 IP 22 per IEC 529
77301-23 IP 56 (NEMA 4) per IEC 529
77301-21 IP 56 (NEMA 4) per IEC 529

Environment:

Temperature, Operating: 0° to 40°C (32° to 104°F)
Temperature, Storage: –25° to 65°C (–13° to 149°F)
Humidity (non-condensing): 10% to 90%
Altitude: Less than 2000 m
Pollution Degree:

7523-60, -70, 7550-30, -50, 77301-20 Pollution Degree 2 (Indoor use—lab, office)
77301-30 Pollution Degree 3 (Sheltered locations)

Chemical Resistance: Exposed material is aluminum, ABS plastic and vinyl

Compliance: UL508C, CSA C22.2, No. 14

(For CE Mark):

EN61010-1 (EU Low Voltage Directive) and

EN61326 (EU EMC Directive)

9

WARRANTY

Use only MASTERFLEX precision tubing with MASTERFLEX pumps to ensure optimum performance. Use of
other tubing may void applicable warranties.

The Manufacturer warrants this product to be free from significant deviations from published specifications. If repair
or adjustment is necessary within the warranty period, the problem will be corrected at no charge if it is not due to
misuse or abuse on your part, as determined by the Manufacturer. Repair costs outside the warranty period, or those
resulting from product misuse or abuse, may be invoiced to you.

The warranty period for this product is 2 years from the date of purchase.

PRODUCT RETURN

To limit charges and delays, contact the seller or Manufacturer for authorization and shipping instructions before
returning the product, either within or outside of the warranty period. When returning the product, please state the
reason for the return. For your protection, pack the product carefully and insure it against possible damage or loss.
Any damages resulting from improper packaging are your responsibility.

TECHNICAL ASSISTANCE

If you have any questions about the use of this product, contact the Manufacturer or authorized seller.

Printed in U.S.A.

10

625 East Bunker Court

Vernon Hills, Illinois U.S.A. 60061-1844

1-800-MASTERFLEX (627-8373) (U.S. and Canada only)

11 [phone] (outside U.S.)

[phone] (Local)

FAX [phone] (U.S. and Canada only)

11 [phone] (Fax outside U.S.)

www.masterflex.com

e-mail: [e-mail]

APPENDIX A
PUMP DRIVE COMMUNICATION
SPECIFICATION

1.0 - LINKABLE INSTRUMENT
NETWORK

The Linkable Instrument Network is a serial
communication system consisting of a control
computer with one RS-232C port and one or more
satellite units. A satellite unit can be a pump drive
(7550-30, -50), mixer controller (50003-00, -05), or
any future product that conforms to the
communications protocol defined in this
description. This description describes all the
information needed to communicate with a pump
drive. Since much of this information applies to
other products, the term “satellite unit” will be used
as a generic term for all devices compatible with the
Linkable Instrument Network. The term “pump
drive” will be used when the information applies
only to MASTERFLEX Computerized Drives
(7550-30, -50).

Drives (7550-30, -50)

All communications between the control computer
and satellite units is based on a pseudo daisy-chain
principle. The transmission line of the control
computer will pass through the input and output
buffers in each of the satellite units. Each satellite
unit will have the ability to turn the buffers on and off
to block communications from other units below it in
the daisy-chain. The output of the control computer
would pass through each of the pump drives without
software assistance from the pump drive. All Pump
Drives in the daisy-chain must be powered up to
enable communications with all drives.

The receive line of the control computer will originate
in the transmitter of the last satellite in the chain. It
will also be double buffered through each satellite.
Each of the pump drives will have the ability to turn
off its input receive line and place its own transmitter
on the receive line to the control computer.

A third line, the Request To Send (RTS) will be a
similarly buffered line. Each satellite will have the
ability to set this line to signal the computer its
request to send.

The maximum number of satellites is limited to 25
by the Linkable Instrument Network software to
minimize communication time. However, up to 89
satellites could be controlled by a single RS-232C
port using custom software since satellite units can
be assigned any number from 01 to 89.

1.1 - SERIAL CONNECTIONS

The 7550 Digital PWM BLDC Drives communicate
with each other and a PC via a standard DB-9
modem cable (Cat. #22050-54). Older satellite units
have a dual 6 position modular phone jack labeled
“IN” and “OUT”. Pin 1 on both jacks is located
towards the top of the drive. The control computer
will have a standard DB-25 plug as found on most
RS-232C connections. The DB-9 “AT” type
connector can also be used with the DB-9 to DB-25
adapter included with 7550-64 Computer to Pump
cable assembly.

“IN” JACK

Pin 1 - No connection
Pin 2 - Receive signal from the computer
Pin 3 - Transmit signal to the computer
Pin 4 - Ground
Pin 5 - Request to send (RTS) to the computer
Pin 6 - No connection

“OUT” JACK

Pin 1 - No connection
Pin 2 - Request to send (RTS) from the next satellite
Pin 3 - Ground
Pin 4 - Receive signal from the next satellite
Pin 5 - Transmit signal to the next satellite
Pin 6 - No connection

DB-25 PLUG ON CONTROL COMPUTER

Pin 2 - Transmitted data to satellite
Pin 3 - Received data from satellite
Pin 5 - Clear to send—RTS from satellite
Pin 7 - Ground

DB-9 PLUG “AT type” ON CONTROL
COMPUTER (DTE) AND SATELLITE

Pin 3 - Transmitted data to satellite
Pin 2 - Received data from satellite
Pin 8 - Clear to send—RTS from satellite
Pin 5 - Ground

DB-9 SOCKET ON SATELLITE (DCE)

Pin 3 - Receive signal from the computer
Pin 2 - Transmit signal to the computer
Pin 5 - Ground
Pin 8 - Request to send—(RTS) to the computer

The serial lines between units will be passed from
unit to unit by a hardware buffer on the input and
connecting it directly to the output driver through a
hardware gate. This way any output only sees one
input load. If power is turned off on any pump drive,
all drives below it in the daisy-chain cannot
communicate.

1.2 - SERIAL DATA FORMAT

The serial data format is full duplex (simultaneously
transmit and receive), 1 start bit, 7 data bits, one odd
parity bit, and one stop bit at 4800 bits per second.
All data transmitted will consist of characters from
the standard ASCII character set.

Note: Odd parity is defined such that the sum of

the eight individual bits is an odd number
(1, 3, 5 or 7).

1.3 - SERIAL PROTOCOL

All transmissions originate or are requested by the
control computer (master). It may issue commands
directly and it may request that the satellites report.
When asked to report, the satellite would send the
data requested. Should a satellite require
communication with the computer, it has the ability
to operate the request to send (RTS) line. Upon
receiving the request, the computer would respond
via the serial line (section 1.11).

1.4 - START UP SEQUENCE

Normal start up would consist of turning on all the
satellite units first and then the control computer.
Each satellite will enable its receive and transmit
buffers and activate its RTS line. The control
computer would then send the enquire <ENQ>
command in response to the active RTS line. Upon
receiving the <ENQ> command, all satellites with
an active RTS line would disable its receive and
transmit buffers to the satellites below it in the
daisy-chain. Next the pump drives would respond
with one of the following strings depending on its
model number and version.

<STX>P?0<CR> = 600 RPM 7550 -30
<STX>P?2<CR> = 100 RPM 7550 -50

The control computer would only see the response
from the first satellite in the chain since
communications with the others is now blocked.
The control computer would then send back <STX>
Pnn<CR> with nn being a number starting with 01
for the first satellite and incrementing for each
satellite up to 25 maximum. If the pump drive
receives the data without errors it will perform the
following steps:

1. Deactivate its RTS line and enable the receive
buffers to the next satellite.

2. Send an <ACK> to the control computer.

3. Enable the transmit buffer from the next satellite
within 100 milliseconds after the last byte has
been sent.

4. Put a P and the satellite number received in the
first 3 positions on the satellite display.

Figure A1 - Serial daisy-chain connections

11

After the control computer receives the <ACK> it
will see the RTS from the next satellite and again
issue the <ENQ> command. The above process will
be repeated until all satellites are numbered.

If a satellite does not receive valid data from the
control computer or detects a transmission error, it
will send a <NAK>. When the control computer
receives the <NAK> it will resend the
<STX>Pnn<CR> to the satellite. Section 1.10 on
error handling describes the maximum retries the
control computer will perform.

If a satellite is turned on after all the other satellites
have been numbered, it will be numbered the same
as described above with the next available number if
no commands have been sent to the other satellites.
If commands have been issued, the satellite is
assigned a temporary number starting with 89 and
decrementing for each subsequent satellite. This
will cause the satellite to release its RTS so normal
communication can proceed. The operator will be
alerted to the condition that another satellite has
come on-line and needs to be numbered. The
operator will then be able to assign the new
satellites a number so that they will appear correctly
in the system. The control computer will use the
following commands to renumber a satellite:

<STX>PooUnn<CR>

The oo is the old satellite number and nn the new
number.

If a satellite is requesting to be numbered and the
control computer has already issued 25 satellite
numbers, the control computer will assign the
satellite the number 89 as described in the preceeding
paragraph and alert the operator to the situation.

If a satellite is powered down after it has been
numbered, it will be treated as a new unit as
described above when it is powered up again.

1.5 - REMOTE/ LOCAL
OPERATION

Once a satellite is in the remote mode, it can be
returned to local mode using the control computer
and the “L” command. If the control computer
program is no longer running, the satellite can be
powered off and then on to return it to local
operation. If the “L” command is used, the satellite
will retain its assigned number and respond to
request commands from the control computer but
ignore control commands.

1.6 - COMMAND FORMAT

Most commands from the control computer are
preceded with the start of text <STX> character
(02 hex), a satellite identification letter (P for Pump,
M for mixer) and a two digit satellite number
(01 through 89). Numbers 00 and 90 through 99 are
reserved for special cases. When the same
command is to be executed by all pump drives, 99 is
sent for the satellite number. After the command
character is the parameter field which varies in size
from zero characters to 32 depending on the
command. A carriage return <CR>, (0D hex) is
used to indicate the end of a command string. (Note,
the exceptions to this computer issued command
format are <ENQ>, <ACK> and <NAK>.) See
Figure A2.

More than one command can be put in a command
string as shown following:

<STX>P09S+0500.0V08255.37G <CR>

The above multiple command string example would
set the speed at pump satellite 09 to 500.0 RPM,

clockwise direction, set 8255.37 revolutions and
start the drive. The maximum number of characters
allowed in one pump drive string is 38, including
<STX>, Pnn and <CR>.

1.6.1 - Command Features

1. INITIALIZING

Before a pump drive can be controlled, it must
first be numbered. If any command is issued
before this is done, the satellite will not respond.

2. SETTING SPEED

If a SPEED command is issued after the speed
has already been set, the new speed will be used.
If the pump drive is running and a different
direction is sent to the pump, the pump will send
back a <NAK>. A halt command must first be
issued before the direction can be reversed.

3. SETTING REVOLUTIONS

When “Revolutions To Go” are set with the V
command, they are added to the total revolutions
to go counter. The maximum this counter can be
is 99999.99. If a revolutions to go count is sent to
the pump drive which would cause the counter to
over flow past 99999.99, the pump drive will not
add the value to its revolutions to go counter and
will send the control computer a <NAK>. The
revolutions to go counter can be set to zero by
using the Z command, which will also cause the
pump to stop if it is running when the Z
command is received.

1.7 - CONTROL COMPUTER
PARAMETER FIELDS

The parameter field sent by the control computer is
variable in length. The control computer will have
the option of using leading zeroes, leading spaces,
or no padding at all. For example, if 200 revolutions
was to be sent with the V command, the following

list of parameters would all be accepted by the
satellite as valid:

(s = space) 00200.00

ss200.00
sss200.00
sssss200

200.00

200.0
200

1.7.1 - Satellite Data Fields

Any data that a satellite sends to the control
computer will have a fixed number of characters
which is determined by the command. For example,
if the control computer requested the cumulative
volume, it would always receive 10 characters
representing the cumulative volume (0000000.00 to

9999999.99).

1.8 - PUMP DRIVE STATUS

REQUEST

When the control computer requests status from the
pump drive (I command or <ENQ>), the satellite
will respond with the following status information
(Figure A3):

Note: “Pump not numbered” is also a pump status

but it is not included in the pump status byte
since this condition is handled separately
using the P?x (see section 1.4).

When the satellite sends the status information, any
status conditions that are latched by the satellite will
be cleared by the control computer sending an
<ACK>Pnn<CR>. If the satellite receives the I
command again, it will respond with the same status
information.

Figure A2

Figure A3

12

1.9 - SATELLITE RESPONSE

When the pump satellite correctly receives a
command, it will send back an <ACK> (06 hex) if it
was not an all pumps command (P99). If data has to
be sent back to the master in response to the
command, it will be sent as shown in Table 2. If the
satellite detected an error while receiving a
command, it will respond with a <NAK>.

1.10 - ERROR HANDLING

Depending on the error code received from the
satellite, the control computer would have to take
appropriate action to try to eliminate the error
condition. Communication errors of type 1, 2 or 3
indicate a hardware type error: noisy
communication lines, bad connection, glitches or
circuit failure. Communication error codes 4 or 5
could be hardware errors as previously described or
software errors caused by incorrect commands or
data being sent by the control computer. For
hardware type errors the control computer would try
sending the same command to see if the problem
was only momentary. If an error code is returned
four times in a row or if there is no response at all,
the control computer would abort trying to send the
command and notify the operator of the type of
error.

If a satellite does not respond at all, the control
computer can assume one of the following:

1. If all other satellites connected after the satellite
in question also don’t respond, the
communication link is broken at that point or the
satellite is defective.

2. If all other satellites respond, the unresponding
satellite is either turned off, removed from the
loop, or defective.

1.11 - SATELLITE REQUEST TO
SEND

When a satellite wants to communicate with the
control computer, it will turn on its request to send
(RTS) line and then wait for the (ENQ) enquire
character (05 hex) from the control computer. The
following list shows the possible conditions that
would cause the pump drive to activate its RTS line.

1. Auxiliary input status change.

2. Motor error.

3. Stop key pressed at satellite while in the remote
mode.

4. Programmed volume was reached.

5. Power up.

The following is the sequence of events for when
RTS is activated by a pump drive:

1. Satellite enables RTS line.

2. When control computer detects RTS, it will
transmit the (ENQ) enquire command (05 hex)
after it completes any communications it may be
in the process of doing.

3. When the satellite that has its RTS line enabled
receives the <ENQ> it will disable its RS-232C
buffers to block the other satellites below it in the
daisy-chain from communicating with the control
computer. This would give the satellite closest to
the control computer the highest priority if more
than one satellite enabled its RTS line at the same
time.

4. Next the pump drive will send the response from
the I command as shown in section 1.8.

5. If the control computer received the satellite
response without any errors (parity, overrun etc.)

it will send an acknowledge <ACK>Pnn<CR>
which will cause the satellite to release its RTS
line and enable the RS-232C buffers allowing the
satellites below it in the daisy-chain to
communicate. If the control computer detected
any error during the transmission it would send
the enquire (ENQ) again which would cause the
satellite to re-send its response. The control
computer will retry a maximum of four times
before aborting and reporting the error to the
operator.

6. If more than one satellite has its RTS line
enabled, the control computer would see only the
response from the satellite closest to it. After the
closest satellite sent its response and released the
RTS line, the control computer would see the
RTS of the other satellite and again issue the
enquire command which would allow the next
satellite with RTS active to respond.

7. If a satellite was responding to an enquire
command and another satellite with higher
priority also started to respond, cutting off the
first responding satellite, the control computer
would receive invalid data and get some type of
error (parity or framing). This would cause the
control computer to resend the enquire, but this
time only the higher priority satellite would
respond since the communications with the lower
satellites is blocked.

COMMAND CHARACTERS FROM CONTROL

COMPUTER TO PUMP

A Request auxiliary input status

B Control auxiliary outputs when G command executed

C Request cumulative revolution counter

E Request revolutions to go

G Go Turn pump on and auxiliary output if preset

H Halt (turn pump off)

I Request status data

K Request front panel switch pressed since last K command

L Enable local operation

O Control auxiliary outputs immediately without affecting drive

R Enable remote operation

S Set motor direction and RPM

S Request motor direction & RPM

U Change satellite number

V Set number of revolutions to run

Z Zero revolutions to go counter

Z Zero cumulative revolutions

<CAN> Terminates line of data up to and including STX (used primarily for keyboard input)

<ENQ> Enquire which satellite has activated its RTS line

PARAMETER FIELD

none

xy, x = aux1, y = aux2, 0 = off, 1 = on

none

none

none = run for number of revolutions set by V command
0 = continuous run until Halt command

none

none

none

none

xy, x = aux1, y = aux2, 0 = off, 1 = on

none

+xxx.x, -xxx.x, +xxxx, -xxxx
+ = CW, –=CCW

none

nn
new satellite number

xxxxx.xx

none

0

none

none

Table 1 - Pump satellite commands

13

1.12 - FRONT PANEL SWITCHES

The control computer can read the satellite’s front
panel switches by issuing the K command. The
satellite will respond with one character indicating
the last switch pressed since the last K command
was acknowledged. If more than one key was
pressed, only the last one pressed is indicated. After
the control computer receives the satellite’s switch
status, it must send an <ACK>Pnn<CR> to inform
the satellite it can reset the switch status to no key
pressed. Table 3 following shows the character
returned by the K command and the corresponding
switch for pump units.

0 = No key pressed 6 = Dir

1 = Stop/Start 7 = Size

2 = Prime 8 = Flow rate

3 = Mode 9 = Down arrow

4 = Dispense A = Up arrow

5 = Cal

Table 3 - K command key codes for pump drives

CONTROL COMPUTER

COMMAND STRING

<STX>PnnA<CR>

<STX>PnnBxy<CR>

xy: 0 = off, 1 = on
x = aux1, y = aux2

<STX>PnnC<CR>

<STX>PnnE<CR>

<STX>PnnG<CR>

<STX>PnnH<CR>

<STX>PnnI<CR>

<STX>PnnK<CR>

<STX>PnnL<CR>

<STX>PnnOxy<CR>

xy: 0 = off, 1 = on
x = aux1, y = aux2

<STX>PnnR<CR>

<STX>PnnS+0130<CR> or

<STX>PnnS+0130.0<CR>

<STX>PnnS<CR>

<STX>PnnUnn<CR>

nn = 01, 02, 03....87, 88, 89

<STX>PnnVxxxxx.xx<CR>

V max = 99999.99

<STX>PnnZ<CR>

<STX>PnnZ0<CR>

<CAN>

<ENQ>

PUMP DRIVE

RESPONSE

<STX>Ax<CR>
x: 0=open, 1=closed

<ACK> or none if P99

<STX>Cxxxxxxx.xx<CR>
max revolutions = 9,999,999.99

<STX>Exxxxx.xx <CR>
x : revolutions to go (99,999.99 max)
(-xxxx.xx if drive overshoots)

<ACK> or none if P99

<ACK> or none if P99

<STX>PnnIxxxxx<CR>
(see section 1.8)

<STX>Kx<CR> (see section 1.12)

<ACK> or none if P99

<ACK> or none if P99

<ACK> or none if P99

<ACK> or none if P99

<ACK> or none if P99

<STX>S+0432.9<CR>

<ACK>

<ACK> or none if P99

<ACK> or none if P99

<ACK> or none if P99

<ACK>

<STX>P?x<CR> (on pump power up)
<STX>PnnIxxxxx<CR>
(see section 1.8)

Table 2 - Sample pump commands and responses

1.13 - ASCII CONTROL CHARACTERS USED

DECIMAL HEX CHARACTER

2 02 STX Start of Text (CTRL - B)

6 06 ACK Acknowledge (CTRL - F)

5 05 ENQ Enquire (CTRL - E)

13 0D CR Carriage Return (CTRL - M) (CR)

21 15 NAK Negative Acknowledge (CTRL - U)

24 18 CAN Cancel (CTRL - X)

Table 4 - ASCII control codes used

14