Darrtt Controls Full Linnee Catalog - Dart Controls
Darrtt Controls Full Linnee Catalog - Dart Controls
Darrtt Controls Full Linnee Catalog - Dart Controls
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MSC38A MOUNTING DIMENSIONS<br />
4.990"<br />
Total height of control<br />
(including standoffs) is<br />
2.128"<br />
2.750"<br />
MADE IN THE<br />
<br />
MSC38A Series<br />
Eight Channel Master<br />
Speed Control<br />
A reliable, economical master speed control unit for operating<br />
multiple variable speed drives from a single 5K master potentiometer<br />
or field selectable DC voltage range of 0-5 through 0-25 VDC<br />
OR 0-25 through 0-200 VDC input (grounded or ungrounded).<br />
Drives may be controlled to maintain identical speeds or<br />
individually pre-set proportional speeds with respect to the MSC<br />
speed setting.<br />
STANDARD FEATURES<br />
±<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
mounting included<br />
<br />
<br />
<br />
<br />
<br />
<br />
as 500 ohm<br />
DIMENSIONAL SPECIFICATIONS<br />
WIDTH HEIGHT LENGTH WEIGHT<br />
English (inches)<br />
<br />
Metric (centimeters)<br />
7.95 5.41 13.73 208.3 gm<br />
OPERATING CONDITIONS<br />
Temperature .................................<br />
AC Input Voltage ................................... ±<br />
Input Frequency ..........................................................<br />
Output Voltage ..................... <br />
Output Current ................................................ 10 mA per channel<br />
MSC38A HOOK-UP FOR DIRECT OPERATION<br />
INPUT HOOK-UP FOR RATIO OPERATION<br />
FROM<br />
MSC<br />
AC1<br />
AC2<br />
Cascade Out<br />
Cascade In<br />
Output to<br />
Control # 1<br />
Output to<br />
Control # 2<br />
Output to<br />
Control # 3<br />
Output to<br />
Control # 4<br />
Low<br />
Wiper<br />
High<br />
Low<br />
Wiper<br />
High<br />
Low<br />
Wiper<br />
High<br />
Low<br />
Wiper<br />
High<br />
LOW<br />
WIPER<br />
HIGH<br />
P1<br />
10K-250K<br />
OHM<br />
increase<br />
For 0-5VDC through 0-25VDC,<br />
connect P3-1 to P3-2;<br />
For 0-25VDC through 0-200VDC,<br />
connect P3-2 to P3-3<br />
Gain<br />
Trimpot<br />
RATIO<br />
CONTROL<br />
approx.<br />
5K<br />
High<br />
Wiper<br />
Low<br />
-3-2-1<br />
Min<br />
Trimpot<br />
P3<br />
Common<br />
High<br />
Wiper<br />
Low<br />
High<br />
Wiper<br />
Low<br />
High<br />
Wiper<br />
Low<br />
High<br />
Wiper<br />
Low<br />
High<br />
Wiper<br />
Low<br />
CONTROL UNIT<br />
(i.e. 500, 250, 125 SERIES<br />
SPEEDPOT LO<br />
SPEEDPOT WIPER<br />
SPEEDPOT HI<br />
+ ARMATURE<br />
- ARMATURE<br />
+ FIELD<br />
- FIELD<br />
SPARE<br />
SPARE<br />
AC INPUT<br />
AC INPUT<br />
CASCADE HOOK-UP FOR BASIC CONTROLS<br />
Master<br />
Speedpot<br />
Output to<br />
Control # 8<br />
Output to<br />
Control # 7<br />
Output to<br />
Control # 6<br />
Output to<br />
Control # 5<br />
Master<br />
Speedpot<br />
Common Common Common<br />
MSC # 1 MSC # 2 MSC # 3<br />
Cascade Out Cascade In Cascade In<br />
For more than 8 outputs using a single Master speedpot, controls can be<br />
cascaded together via the cascade and common terminals shown above.<br />
P2<br />
Optional DC<br />
Voltage Source<br />
(can be used in place<br />
of Master Speedpot)<br />
42 www.dartcontrols.com