Download L/R Drive Manual

Haydon Switch & Instrument, Inc.
P/N 39105
Unipolar/Bipolar
L/R Drive Manual
1500 Meriden Road
Waterbury, Connecticut 06705
203-756-7441, Fax: 203-756-8724
www.hsi-inc.com, email: [email protected]
Table of Contents
Introduction..............................................................
2
Specifications...........................................................
2
Power Supply Connections......................................
3
Switch Settings - Local Control..............................
4
Unipolar................................................................ 4
Switch Settings - Local Control..............................
5
Bipolar.................................................................. 5
External I/O Control................................................ 5
External Clock..................................................... 5
External Direction Control.....................................5
External Enable Control........................................ 6
External Step Rate Control.................................... 6
Step Rate Adjustment........................................... 6
Connector Pin Allocation........................................
7
Drawing.....................................................................
8
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Unipolar/Bipolar L/R Drive Manual
Model 39105
Introduction
This type of drive is also referred to as a constant voltage drive. Many of these drives can be
configured to run bipolar or unipolar stepper motors. L/R stands for the electrical relationship of inductance
(L) to resistance (R). Motor coil impedance vs, step rate is determined by these parameters. The L/R
drive should “match” the power supply output voltage to the motor coil voltage rating for continuous duty
operation. Most published motor performance curves are based on full rated voltage applied at the motor
leads. Power supply output voltage level must be set high enough to account for electrical drops within the
drive circuitry for optimum continuous operation.
Specifications
Input Voltage
M otor Dire ction
M otor Enable
7.5 to 32 Vdc
Selected via on board switch or external control via input/output (I/O)
connector
Enabled/disabled via on board switch or external control via I/O
connector.
Single st ep operat ion: Via on board push button switch
Ste p Rate
Cont inuous: On board or external potentiometer controlled oscillator
(10 Hz to 2Khz.)
Ex t ernal Cont rol: Via I/O connector
Unipolar Drive: 4 Phase stepper motor drive based onn Allegro (Sprague) p/n
UCN5804B.
Motor Current: .75 A/phase continuous 1.5 A/phase peak
Stepping Modes: (Switch selectable)
Full step - 2 phases ON
Full step wave - 1 phase ON
Half stepping
Bipolar Drive: Dual full bridge motor driver based on Allegro (Sprague) p/n UDN2998W
Motor Current: 2 A/Phase continuous 3 A/phase peak
Stepping Mode: Full Step - 2 phases ON only.
Power Supply: 7.5 Vdc minimum value
32.0 Vdc maximum value
Note: power supply voltqge is determined by the motor selected.
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L/R Drive Manual
Power Supply Connections
1. Connect he “Positive” (+) lead to the edge connector T2-16 or T2-17 or both.
2. Connect the “Negative” (-) lead to the edge connector T2-3 or T2-10 or both.
3. This supply powers the motor and electronics via a 5 volt regulator.
Unipolar Operations
-This drive is intended to operate a low power unipolar stepping motor.
-The 5 or 6 lead wires from the motor can be connected to terminals T1-1 thru T1-6 or
edge connector T2-11 thru T2-15. (See the “connector pin allocation” for the correct
wiring sequence).
-See the “switch settings” to obtain the desired mode of operation.
Bipolar Operations
-This drive is intended to operate a low power bipolar stepping motor.
-The 4 lead wires from the motor can be connected to terminals T3-1 thru T3-4 or edge
connector T2-6 thru T2-9. (See the “connector pin allocation” for the correct wiring
sequence).
Full step (2 phase on) mode must be selected.
Switch settings (Full step - 2 phases on)
S1-5
S1-6
ON
ON
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L/R Drive Manual
Local Control
Switch Settings - Unipolar Operation
Step Rate
Single step
Continuous step
S1-1
ON
ON
S1-2
ON
OFF
Motor Enable
Enable
Disable
S1-3
ON
OFF
Motor Direction
Clockwise
Counter clockwise
S1-4
ON
OFF
Step Mode
Full step (2 phases on)
Full step wave (1 phase on)
Half step
Step inhibit
S1-5
ON
ON
OFF
OFF
S1-6
ON
OFF
ON
OFF
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L/R Drive Manual
Local Control
Switch Settings - Bipolar Operation
Step Rate
Single step
Continuous step
S1-1
ON
ON
S1-2
ON
OFF
Motor Enable
Enable
Disable
S1-3
ON
OFF
Motor Direction
Clockwise
Counter clockwise
S1-4
ON
OFF
Step Mode
Full step (2 phases on)
Step inhibit
S1-5
ON
OFF
S1-6
ON
OFF
External I/O Control
External clock: An external clock or pulse source can be substituted for the on-board
oscillator as follows:
1. Open jumper J1.
2 Connect an external oscillator to T2-4.
3. Signal amplitude must remain within the limits of 0 to + 5V.
External Direction Control:
1. Turn the on-board direction switch (S1-4) to the OFF position.
2. Connect external direction control to T2-5.
3. Signal amplitude must remain within the limits of 0 to +5V.
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L/R Drive Manual
External I/O Control con’t
External Enable Control:
1. Turn the on-board enable switch (SW1-3) to the OFF position.
2. Connect external enable control to T2-18.
3. Signal amplitude must remain within the limits of 0 to +5V.
External Step Rate Control: Provisions have been made to control the on-board oscillator with
an external fixed or variable resistor.
1. Remove resistor R2 to disable the on-board potentiometer P1.
2. Connect a fixed or variable resistor between terminals T2-1 and T2-2.
3. The step rate can be changed by varying the value of the external
resistance as specified on 555 timer data sheets.
Step Rate Adjustment: The step rate can be varied between 10 step/sec and 2000 steps/sec by
adjusting the on board potentiometer P1.
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L/R Drive Manual
Connector Pin Allocation
Pin #T2
Pin #T1
Pin #T3
De s cription
1
+5V output also optional ext. potentiometer connection (+)
2
Optional external potentiometer connection
3
Common negative (- ) connection [ground (GND)]
4
External clock input
5
External directioncontrol
6
1
Bipolar drive output RED
7
2
Bipolar drive output BLACK
8
3
Bipolar drive output BLUE
9
4
Bipolar output GREEN
10
Common negative (- ) connection (GND)
11
1
Unipolar drive output BLACK
12
2
Unipolar drive output RED
13
3
Unipolar drive output BLUE
14
4
Unipolar drive output GREEN
15
5, 6
Unipolar drive output WHITE- WHITE
16
External power input positive (+) 7.5 to 32 Vdc
17
External power input positive (+) 7.5 to 32 Vdc
18
External enable control
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L/R Drive Manual
Drawing
3.50
3.06
Ø .12
4 PLCS
.22
1.90
2.50
2.93
.68
.28
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