Darrtt Controls Full Linnee Catalog - Dart Controls

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