INSTRUCTION MANUAL for Motor Operated Potentiometer MOC21XX through MOC24XX and MOC29XX Part Number: 9 0723 00 XXX
Motor Operated Control Potentiometer Model No. MOC21XX MOC21XX Part No. 9072300XXX
8 1 0 0 - 9 1 3 3 8 2 0 D 1
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Publi Publica cati tion: on: 9 072 0723 3 00 99 99X X Revi Re visi sion on:: K 11/0 11 /01 1
INTRODUCTION This manual provides information concerning the operation and installation of Basler Motor-Operated Potentiometers with model numbers MOC21XX through MOC24XX and MOC29XX. To accomplish this, the following information is provided.
Specifications
•
Functional Description
•
Mounting and Wiring Diagrams
WARNING! To avoid personal injury or equipment damage, only qualified personnel should perform the procedures presented in this manual.
Introduction
i
First Printing: February 1976 Printed in USA © 1997 to 2001 Basler Electric, Highland, Illinois 62249 USA November 2001
CONFIDENTIAL INFORMATION Of Basler Electric. It is loaned for confidential use, subject to return on request, and with the mutual understanding that it will not be used in any manner detrimental to the interest of Basler Electric.
It is not the intention of this manual to cover all details and variations in equipment, nor does this manual provide data for every possible contingency regarding installation or operation. The availability and design of all features and options are subject to modification without notice. Should further information be required, contact Basler Electric.
BASLER ELECTRIC ROUTE 143, BOX 269 HIGHLAND, IL 62249 USA http://www.basler.com,
[email protected] PHONE 618-654-2341 ii
FAX 618-654-2351 Introduction
CONTENTS SECTION 1 • GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input Operating Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Limit Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dynamic Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1 1-1 1-1 1-2 1-2 1-2 1-2 1-2 1-2 1-2 1-2
SECTION 2 • FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VOLTAGE INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SWITCH INPUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ROTATION LIMITING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DYNAMIC BRAKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POTENTIOMETER OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1 2-1 2-1 2-1 2-2 2-2 2-2
SECTION 3 • INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ACCESSORY ITEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1 3-1 3-1 3-3
SECTION 4 • MANUAL CHANGE INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 REVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Introduction
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SECTION 1 GENERAL INFORMATION GENERAL DESCRIPTION The Basler MOC2XXX Motor-Operated Potentiometer is an electromechanical device containing a motordriven, variable potentiometer and the limit switches required to provide remote adjustment of resistance, voltage, or frequency. MOC2XXX devices are available for ac or dc operation at 24, 32, 48, or 120 volts. Model Number The model number for this series of MOCs consists of the prefix MOC2 followed by three digits. The first digit establishes the input operating voltage. Input operating voltage options are listed in Table 1-1. Table 1-1. Input Operating Voltage Options Model
Input Operating Voltage
MOC21XX
120 Vdc/Vac
MOC22XX
48 Vdc/Vac
MOC23XX
32 Vdc/Vac
MOC24XX
24 Vdc/Vac
MOC29XX
Special
Input operating voltage values are ±10%. Maximum frequency is 450 Hz. The second and third digits establish the output control potentiometer characteristics. Table 1-2 lists the characteristics of the available output control potentiometers. Table 1-2. Output Control Potentiometer Options Model Number
Resistance Value
Maximum Power
Adjustment Rate
Traverse Rate
MOC2X02
175
, ±10%
10 W
8.15 /s
21.5 s
MOC2X03
250
, ±5%
2W
3.13 /s
80 s
MOC2X04
250
, ±10%
10 W
11.7 /s
21.5 s
MOC2X05
500
, ±5%
2W
6.26 /s
80 s
MOC2X07
5,000
, ±10%
10 W
237.6 /s
21.5 s
MOC2X99
Special
Special linear wire-wound potentiometers are available: Normal resolution: 1 to 25,000 , 10 W Precise resolution: 10 to 100,000 , 2 W For example, an MOC2305 has a 32 volt input and a 500 ohm, 2 watt, control potentiometer.
General Information
1-1
SPECIFICATIONS The electrical and physical specifications for the MOC are provided in the following paragraphs. Input Operating Power Voltage: Current: Frequency: Withstand Voltage:
24, 32, 48, or 120 V 0.3 A, maximum dc to 450 Hz 135% of nominal for 5 minutes
Output Control Potentiometer: Resolution:
Linear, wire-wound Normal (1 turn, 10 W rating) Precise (3 turns, 2 W rating)
Limit Switches Functions: Configuration: Contact Ratings AC: DC: Setting:
Clockwise rotation and counterclockwise rotation SPDT 5 A at 250 V 0.5 A at 125 V, 0.25 A at 250 V (resistive load) Factory preset at 2% (±0.5%) of the clockwise and counterclockwise rotational limit. Position of switches is user-adjustable.
Dynamic Braking Braking Speed:
Motor shaft stops rotating within 10 ms of shorting MOC terminals 5 and 7.
Shock Withstand Level:
15 G in all planes
Temperature Operating:
–40°F to 158°F (–40°C to 70°C)
Weight Unit: Shipping:
1-2
9 lb (4.08 kg) 10.5 lb (4.77 kg)
General Information
SECTION 2 • FUNCTIONAL DESCRIPTION INTRODUCTION MOC operation is described in the following paragraphs. Figure 2-1 illustrates the components, contact configurations, and terminals of the MOC.
Figure 2-1. MOC Components and Terminals
VOLTAGE INPUT Input voltage of 24, 32, 48, or 120 Vdc/Vac is applied at terminals 1 and 2. The MOC model number determines the nominal input voltage level. The input voltage is converted to a dc signal and supplied to terminals 3 (–) and 4 (+) for connection to an external switch (see Table 3-1). The external switch has three positions (Raise/off/lower) and applies the dc signal to the MOC motor in the desired polarity. Motor polarity is determined by the need to rotate the potentiometer wiper arm either clockwise or counterclockwise.
EXTERNAL SWITCH INPUTS Placing the external switch in the Raise or Lower position applies voltage to the MOC motor and causes it to rotate and move the MOC potentiometer wiper arm. If the external switch is placed in the Raise position, the polarity of the voltage applied to the motor causes it to rotate in the clockwise direction. Clockwise motor rotation continues until the external switch is released from the Raise position or until the MOC clockwise limit switch activates and removes the motor voltage. Placing the external switch in the Lower position applies voltage in a polarity that causes the motor to rotate in the counterclockwise direction. Counterclockwise motor rotation continues until the external switch is released from the Lower position or until the MOC counterclockwise limit switch activates and removes the motor voltage. Functional Description
2-1
ROTATIONAL LIMIT OUTPUT CONTACTS Two sets of single-pole, double-throw (SPDT) output contacts indicate the rotational limits of the MOC potentiometer. The contacts at terminals 8, 9, and 10 are controlled by the MOC clockwise limit switch and change state when the potentiometer reaches its clockwise limit. At the clockwise limit, the contacts at terminals 8 and 9 open and the contacts at terminals 9 and 10 close. The contacts at terminals 11, 12, and 13 are controlled by the MOC counterclockwise limit switch and change state when the potentiometer reaches its counterclockwise limit. At the counterclockwise limit, the contacts at terminals 11 and 12 open and the contacts at terminals 12 and 13 close.
DYNAMIC BRAKING Dynamic motor braking is obtained when MOC terminals 5 and 7 are shorted. An optional, external switch provides the necessary contact arrangement for the raise/lower function and the dynamic braking feature. Section 3, Installation, Accessory Items lists the MOC switches available from Basler Electric.
POTENTIOMETER OUTPUT The potentiometer serves as the adjusting component of the MOC and is connected to terminals 14, 15, and 16. The potentiometer wiper arm, connected to terminal 15, moves toward terminal 14 when the external switch is placed in the Raise position. When the external switch is placed in the Lower position, the wiper arm moves toward terminal 16.
2-2
Functional Description
SECTION 3 • INSTALLATION MOUNTING The MOC can be mounted in any position. Figure 3-1 provides the overall dimensions and mounting hole locations for the MOC.
Figure 3-1. MOC Dimensions, Mounting Holes, and Terminal Locations
CONNECTIONS MOC terminal location and numbering is illustrated in Figure 3-1. Typical connections between the MOC and external switches are shown in Figure 3-2.
Installation
3-1
Figure 3-2. Typical MOC Connections
3-2
Installation
ACCESSORY ITEMS Table 3-1 lists the switch and dial-plate sets that are available from Basler Electric as an accessory for the MOC. Table 3-1. Accessory Switch and Dial-Plate Sets Part Number
Installation
Description
9174805106
Rotary, three-position, momentary-action switch with pistol-grip handle and blank dial plate.
9174805107
Rotary, three-position, momentary-action switch with pistol-grip handle and FREQUENCY CONTROL, LOWER-OFF-RAISE dial plate.
9174805108
Rotary, three-position, momentary-action switch with pistol-grip handle and VOLTAGE CONTROL, LOWER-OFF-RAISE dial plate.
3-3
SECTION 4 • MANUAL CHANGE INFORMATION REVISIONS The following information provides a historical summary of substantive changes made to this publication (907230099X). Revisions are listed in reverse chronological order. Table 4-1. Summary of Changes Revision
Summary of Changes
ECO/Date
K
Section 1. Divided Table 1-1 into two tables. Table 1-1 lists the input operating voltage options and Table 1-2 lists the potentiometer options. Reorganized the electrical and physical specifications. Section 2. Split into two sections: Section 2, Functional Description and Section 3, Installation . Reorganized the functional description information provided in Section 2. Added figure to illustrate MOC components, contact configurations, and terminals. Section 3. Changed from Manual Change Information to Installation . Corrected interconnection diagram external switch connections. Reformatted and expanded the interconnection diagram to ease understanding. Section 4. Manual Change Information moved to Section 4.
15267/11-01
J
Changed Table 1-1 Note *** from 2 W rating from 10 to 10,000 to 2 W rating from 10 to 100,000 . Added Section 3, Manual Change Information . Updated the manual format.
1852/12-98
H
Changed dimensions from 7.94" to 7.91" in Figure 2-1, Outline Drawing.
Manual Change Information
16114/04-97
4-1
ROUTE 143, BOX 269 HIGHLAND, IL 62249 USA http://www.basler.com,
[email protected] PHONE 618-654-2341
FAX 618-654-2351
