PB0224 Issue 4
OEM Speed control board
102 and 313 speed control board
Installation and operating instructions
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Contents
Declarations
1.0 Description
2.0 Specification
3.0 Identification
4.0 313FD/D 12V DC motor - externally mounted transistor
5.0 External component connections
5.1 Power supply
5.2 Motor
5.3 Speed control
5.4 Remote stop
6.0 Options
6.1 Direction reverse relay
6.2 “Power on” LED
6.3 AC supply unit
6.4 Board-mounted speed control potentiometer
6.5 Front mounted speed control potentiometer
6.6 Maximum speed (for priming) switch
7.0 Calibration
7.1 Location of pre-set potentiometers
7.2 Procedure
8.0 Components
Declarations
When this OEM circuit board is to be installed into machines or is to be
Declaration of
Incorporation
Responsible person: Christopher Gadsden, Managing Director, Watson-Marlow Limited, Falmouth, Cornwall
TR11 4RU, England. Telephone +44 (0) 1326 370370 Fax +44 (0) 1326 376009.
assembled with other machines for installations, it must not be put into service
until the machinery into which it has been incorporated has been declared in
conformity with the provisions of the Low Voltage Directive 2006/95/CE and
the EMC Directive 2004/108/EC.
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1.0 Description
This speed control board has been specifically designed for OEM use, providing a speed control ratio better
than 10:1.
It is capable of speed control, remote stop, a choice of drive direction, and
accepting remote speed control signal input. With the addition of extra components to the standard board,
options of instant direction reverse, power on LED, AC power supply input, board mounted speed control
potentiometer and maximum speed (prime) switch are available.
2.0 Specification
• Suitable for use with Watson-Marlow 102FD/R 12V DC motor and 313FD/D 12V DC motor
• Eurocard format
• 32 way edge connector (mating connector supplied)
• Suitable for pillar mounting
• Suitable for use with 20V to 30V DC power supply or AC mains with an appropriate transformer. Refer to
section 6.3 (for 102FD/R and 313FD/D motors).
3.0 Identification
The board is available in two basic versions; part number 019.2021.000 for the 102FD/R motor as a self
contained unit, and part number 039.2021.000 for the 313FD/D motor with an external heatsink-mounted
transistor. For the 313FD/D version, the additional connections required for the external transistor are covered
in the “313FD/D 12V DC motor - Externally mounted transistor” section.
This board should be protected by suitable fusing.
4.0 313FD/D 12V DC motor - Externally mounted transistor
The following external connection has to be made to allow the speed control PCB to be compatible with the
313FD/D drive.
Transistor Q2 is an externally
mounted TIP 141. An adequate
heatsink must be provided.
Suggested area 1000cm
in free air.
Transistor detail:
Watson-Marlow part number ST0019
RS part number 294-839
Heatsink O.65°C/W
RS part number 403-099
2
(130 sq in)
5.0 External component connections
The connections described in sections 5.1, 5.2 and 5.3 are required for all applications. Those described in 5.4
are optional. None of these require any additional board mounted components and all are common for the
102FD/R and 313FD/D versions.
5.1 Power supply
Terminals 17(+ve) and 32(-ve), 20V to 30V DC from
either battery or a stabilised DC power supply.
For reverse polarity protection add D5 and use terminals
16(+ve) and 32(-ve).
Rating: 102FD/R = 0.5A, 313FD/D = 2.0A
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5.2 Motor
Standard non-reversing connections. Anticlockwise
rotation may be achieved by reversing the motor
connections.
5.3 Speed control
Potentiometer
Note: Options available for
-(1) Board mounted potentiometer
-(2) Molex plug and socket for remote potentiometer.
1W rated
Watson-Marlow part number RV 0087
RS partnumber 162-827
Control signal input
For control by a 0V to 5V analogue signal in place of the speed control potentiometer (wired to terminals 4,5,6).
Input impedance of board is approximately 100kW.
Note: The speed control potentiometer wired to terminals 4,5,6 must not be connected when a control signal is
used.
5.4 Remote stop
Manual
Switch contact rating – negligible
TTL and CMOS compatible
Do not apply inputs in excess of
5V to stop rotation.
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6.0 Options
The following connections require additional board mounted components. These may be obtained from WatsonMarlow and part numbers are given. In addition an RS Component part number is given in some cases as an
alternative source of supply. Where part numbers are not stated but signified with ****** please contact WatsonMarlow Technical Support for further information
6.1 Direction reverse relay
With the addition to the board of the following components, the motor may be connected with automatic
reverse capability. (Reverse motor connections to terminals 7 & 14).
Component Reference Type Watson-Marlow RS part
part number number
Relay RL1 12V DC coil ****** 376-149
Diode D3 IN4005 SD0020 261-182
Resistor R13 100kΩ RC0142 148-972
Transistor Q3 TIPP116 ****** 638-627
Resistor R18 180Ω 1/2W RC0156 132-315 * 20-25V DC supply
270Ω 1/2W RC0103 132-359 * 25-30V DC supply
and AC supply (see
6.3 AC supply input)
Switch contact rating - negligible
Note: With the switch open, motor connection pin 11 is +ve.
6.2 “Poweron” LED
With the addition to the board of a resistor (R14), a “power on” LED may be connected.
LED
Watson-Marlow part number SD 0035
RS part number 590-474
Note: R14 to be chosen to suit supply voltage and LED type.
Suggested value for type above at 20-25V 1k , ½ W
Watson-Marlow part number RC 0118
RS part number 132-494
Suggested value for type above at 25-30V 1k5, ½ W
Watson-Marlow part number RC 0102
RS part number 132-539
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6.3 AC supply unit
For 102FD/R and 313FD/D motors
With the addition to the board of diodes (D4 & D5) and a capacitor (C5), a transformer having a centre tapped
secondary winding may be used to supply the speed control circuitry.
Secondary 15-0-15V
Rating 102FD/R = 12VA
Watson-Marlow part number TF 0008
RS part number 207-655
Rating: 313FD/D = 100VA
Watson-Marlow part number ******
RS part number 207-302
For 102FD/R motor only
Add capacitor C5 to the board: 1000µF, 35V
Watson-Marlow part number: CE 0159
RS part number: 844-068
For 313FD/D motor only
Add capacitor C5 to the board: 4700µF, 35V, 10mm pitch, radial.
Watson-Marlow part number: ******
RS part number: 118-274
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6.4 Board mounted speed control potentiometer
To replace speed control potentiometer (wired to terminals 4,5,6) if “on board” control is required.
Suggested potentiometer: 5k
Watson-Marlow part number: RV 0054
RS part number: 162-221
If an on board potentiometer is not
being used please refer to Section 6.6,
Maximum speed (for priming) switch.
Enable the on-board potentiometer by
adding link LK1 and resistor R19 in
positions marked on the board.
R19-100k
Watson-Marlow part number RC 0142
RS part number 148-972
6.5 Front mounted speed control potentiometer
To replace the speed control potentiometer (terminals 4,5,6) if “front of rack” control is required.
Watson-Marlow part numbers:
Molex Housing SL 0052
Molex Header SL 0024
Molex Terminal SL 0012
Potentiometer RV 0020
RS part numbers:
Molex Housing 467-605
Molex Header 467-554
Molex Terminal 467-598
Potentiometer 4k7/5k: 162-827
If a Max switch is not being used (see section 6.6), enable potentiometer by adding link LK1 and resistor R19
in positions marked on the board.
R19 - 100k
Note: If the board mounted (6.4) or front mounted (6.5) with
Watson-Marlow part number RC 0142
RS part number 148-972
molex connector speed control potentiometers are selected,
the speed control potentiometer wired to terminals 4,5,6 must
be disconnected.
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6.6 Maximum speed (for priming) switch
With the addition of an external non-latching switch wired to connector J3, a maximum speed input is available
for ease of priming. Before adding connector J3, ensure that the “switch by-pass link” LK1 between connectors
J2,2 and J3,1 is not in place.
Watson-Marlow part numbers:
Molex Housing SL 0052
Molex Header SL 0024
Molex Terminal SL 0012
RS part numbers:
Molex Housing 467-605
Molex Header 467-554
Molex Terminal 467-598
7.0 Calibration
7.1 Location of preset potentiometers
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7.2 Procedure
To calibrate the maximum and minimum speeds, the following procedure should be followed:
Top speed
(This adjustment should be carried out with the drive under the duty load)
Set the “Speed control” potentiometer to maximum or the “Control Signal” input to 5V DC. Adjust the “motor
voltage feedback” (P2) potentiometer to give the required maximum output shaft speed.
Note: Do not exceed 110rpm for the 100rpm motor, 70rpm for the 65rpm motor, 55rpm for the 50rpm motor, 11
rpm for the 10rpm motor, 5rpm for the 4rpm motor.
Circuit gain
Set the “Speed Control” potentiometer or the “Control Signal” input to give approximately 10% of the maximum
speed setting. Adjust the “Torque Preset” potentiometer (P1) until the output shaft speed remains constant
when the normal load is applied.
Note: The motor will hunt if too much torque is set.
Minimum speed
Set the “Speed Control” potentiometer or the “Control Signal” input to the minimum
required setting. Adjust the “Minimum Speed Preset” (P3) potentiometer until the
output shaft stops (or rotates at the desired minimum speed).
8.0 Components
Reference Watson-Marlow Description RS part
part number number
C5 (102) CE0159 1000mF, 35V 844-068
C5 (313) CE0155 4700mF, 63V 105-329
J1 US0051 32-way connector 467-453
J2 SL0052 Molex housing 467-605
SL0024 Molex header 467-554
SL0012 Molex terminal 467-598
J3 SL0052 Molex housing 467-605
SL0024 Molex header 467-554
SL0012 Molex terminal 467-598
D3 SD0020 IN4005 261-182
D4 (102) SD0020 IN4005 261-182
D4 (313) ****** P600D 183-4450
D5 (102) SD0020 IN4005 261-182
D5 (313) ****** P600D 183-4450
P4 RV0054 Preset 162-221
Q2 (313) ST0019 TIP141 294-839
Q3 ****** TIPP116 638-627
R13 RC0142 100kΩ 148-972
R14 (20-25V) RC0042 1k 1/2W 148-506
R14 (25-30V) RC0094 1k5 1/2W 148-540
R18 (20-25V) RC0156 180Ω 132-315
R18 (25-30V) RC0103 270Ω 132-359
R19 RC0142 100kΩ 149-972
RL1 ****** Relay 12V DC 376-149
TF0008 Transformer 12VA 207-655
****** Transformer 100VA 207-302
SD0035 LED 590-474
RV0020 Potentiometer 4k7/5k 162-827
Note: Re-check the
sequence as interaction
may occur between
adjustments.
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