ACCU-SET II SERIES STANDARD FEATURES
MADE IN THE
Accu-Set II Series
Smart Speed Potentiometer
for Use with Conventional
AC Frequency or DC Drives
The Accu-Set II Series digital control unit, with an advanced
16-bit Microprocessor, is designed for use with conventional AC
frequency or DC drives, any horsepower, to provide: LED display
of set or actual speed, closed loop motor speed control, Master or
Follower modes, and Serial communications.
The Accu-Set II Series is a companion control to the
Accu-Set Series, while offering significantly improved
performance. This control features a true P-I-D algorithm, for
extremely responsive and precise control over a wide variety of
desired speeds and applications.
Set or actual speed is displayed directly in RPM, FPM, Process Time, or other engineering units. Field programming permits
customizing specific operating parameters.
The integrated RS485/RS422/RS232 serial interface port is
perfect for monitoring or control using almost any computer or
process controller. Units can even be attached in a Local Area
Network, and can then be controlled and programmed either individually or all at once. Multiple programs allow the user to choose
between a “menu” of up to six programmed configurations.
The Accu-Set II Series is ideally suited for commercial or
industrial applications, including system up-grades.
COMMUNICATION FEATURES
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via one cable. Controls can be individually programmed
or integrated.
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9600 baud
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followed together over single RS485 twisted pair wire or over
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24
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process time, or other engineering units
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programmable parameters
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Ê œÀÊäÊ̜ʳxÊ6
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control target speed, current program or frequency generator
output
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ʏˆ˜iÃÆÊ
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control units
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front panel lockout prevents accidental setting changes
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Ê ˆ“ˆÌÊiÝVii`i`]ÊiÌV°
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leader frequency.
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UÊ°°ÊiÝ>˜Òʓi“LÀ>˜iÊÃi>ÃÊv>Vi«>ÌiÊvÀœ“Êi˜ÛˆÀœ˜“i˜Ì
UÊՏ̈‡“œ`iʜvʜ«iÀ>̈œ˜Ê>œÜÃʓՏ̈«iÊVœ˜ÃÌ>˜ÌÃ]ÊÃiÌ̈˜}Ã]Ê
Ê >˜`ÊÕ««iÀɏœÜiÀʏˆ“ˆÌðÊ1«Ê̜ÊÈÝÊ`ˆvviÀi˜ÌÊVœ˜w}ÕÀ>̈œ˜ÃÊV>˜Ê
be selected from the front panel via the up/down pushbutton
switches
PROGRAMMING FEATURES
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Ê Õ˜>Õ̅œÀˆâi`Ê>VViÃÃ
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Ê ‡ÊœÜiÀÉÕ««iÀʏˆ“ˆÌÃÊvœÀÊëii`ÊÃiÌ̈˜}
Ê ‡ÊVViÉ`iViÊäÊ̜ÊÎäÊÃiVœ˜`ÃÊvœÀÊ䇣äääÊ,*ÊV…>˜}i
Ê ‡Ê*ˆVŽ‡Õ«Ê«ÕÃiÃÊ«iÀÊÀiۜṎœ˜
Ê ‡Ê*‡‡Ê}>ˆ˜ÊÃiÌ̈˜}Ã
Ê ‡Ê
œ˜ÃÌ>˜ÌÃÊ̜Ê>œÜÊ`ˆÃ«>Þʈ˜Ê`iÈÀi`ÊÕÃiÀÊi˜}ˆ˜iiÀˆ˜}Ê՘ˆÌÃqÊ
rate or time
Ê ‡ÊiVˆ“>Ê«œˆ˜ÌʜÀÊVœœ˜
Ê ‡Êº-Ì>Ê`iÌiV̜À»Ê̈“i‡œÕÌÊvœÀÊ>˜˜Õ˜Vˆ>̈œ˜Ê>˜`ÊÅÕÌ`œÜ˜
Ê ‡ÊՏ̈«iÊ«Àœ}À>“ÃÊ«iÀ“ˆÌÊÕ«Ê̜ÊÈÝÊ`ˆvviÀi˜ÌÊ`iÈÀi`ÊÃi̇իÃÊ̜Ê
be programmed
Ê ‡Ê-iiVÌ>LiÊ`ˆÃ«>ÞÊL>˜Žˆ˜}Ê«œˆ˜Ì
Ê ‡Ê"«iÀ>̈œ˜Ê“œ`iÊ­“>ÃÌiÀÊÀ>Ìi]ʓ>ÃÌiÀÊ̈“i]ÊÃÌ>˜`>À`ÊvœœÜiÀ]Ê
network follower)
Ê ‡Ê1˜ˆÌÊ>``ÀiÃÃÊvœÀʓՏ̈«iÊVœ˜ÌÀœÊ˜iÌܜÀŽˆ˜}
Ê ‡Ê-iiVÌ>LiÊÃiÀˆ>ÊVœ““Õ˜ˆV>̈œ˜ÊÀ>Ìi
Ê ‡ÊÀœ˜ÌÊ«>˜iÊœVŽœÕÌÊvœÀÊëii`ÊÃiÌ̈˜}Ê>˜`ɜÀÊ«Àœ}À>“ÊV…>˜}iÃ
Ê ‡Ê ՓiÀœÕÃʜ̅iÀÊvi>ÌÕÀiÃ
www.dartcontrols.com
ACCU-SET II SERIES ASP20 SELECTION GUIDE
MODEL
ASP20
INPUT
DISPLAY UNITS
120/240 VAC Rate or Time
HOOK-UP DIAGRAMS - ASP20
STD. SPEED RANGE
Field Programmable*
Requires Dart PU-E or other pick-up.
* Shipped set for 0 - 3600 RPM with one pulse per revolution.
OPERATING SPECIFICATIONS
Temperature .......................................................... ‡£äcÊ̜ʳ{xcÊ
°
AC input voltage ........................................................ 85–265 VAC
Input frequency ..............................................................xäÉÈäÊâ°
Transducer signal input ....................................... ä‡xÊ̜Êä‡Ó{Ê6
Ê
"˜‡Lœ>À`Ê«œÜiÀÊÃÕ««Þ ...........................................5 VDC, 50mA
­vœÀÊiÝÌiÀ˜>ÊÃi˜ÃœÀî
MOUNTING SPECIFICATIONS - ASP20
4.000"
4.000"
3.622"
CONTROLS
Page
Item
Valu
Tach
ASP20
.885"
1.770"
HOUSING DEPTH
4.625"
MICRO-DRIVE
ACCU-SET II
PANEL CUT-OUT
A
S
P
20
P1-1
P1-2
P1-3
M
A
S
T
E
R
P1-6
P1-7
P1-8
P1-4
P1-5
P1-9
FUSE
}
AC INPUT
2 Amp
}
See Output
Connection
Note Below
WIPER OUT
LOW OUT
COMMON
black
+5VDC
red
SIGNAL 1
SIGNAL 2
P1-10
P1-11
UNUSED
P1-12
UNUSED
P1-1
F
O
L
L
O
W
E
R
P1-5
P1-4
P1-6
* OPTIONAL INHIBIT
SWITCH
(Open = Run)
(Closed = Inhibit)
*
AC INPUT
2 Amp
AC INPUT
}
85-265VAC
HIGH OUT
}
See Output
Connection
Note Below
WIPER OUT
LOW OUT
red
P1-7
+5VDC
P1-8
SIGNAL 1
white
SIGNAL 2
P1-9
P1-10
P1-11
UNUSED
P1-12
UNUSED
FOLLOWER PICK-UP
MOUNTED TO
MOTOR SHAFT
black
COMMON
*
(Mounts on rotating
end shaft with 10-32
tapped hole, 1/2" deep)
UNUSED
MASTER PICK-UP
MOUNTED TO
MOTOR SHAFT
* OPTIONAL INHIBIT SWITCH
(Open = Inhibit)
(Closed = Run)
Dia .140" x 2
(Mounts on rotating
end shaft with 10-32
tapped hole, 1/2" deep)
UNUSED
P1-2
P1-3
PICK-UP MOUNTED
TO MOTOR SHAFT
white
FUSE
A
S
P
20
85-265VAC
AC INPUT
HIGH OUT
white
red
black
DIMENSIONAL SPECIFICATIONS
MODEL
WIDTH
ASP20
inches (millimeters)
Housing
Lens
3.620 (91.95)
4.539 (115.29)
(Mounts on rotating
end shaft with 10-32
tapped hole, 1/2" deep)
HEIGHT
DEPTH
1.656 (42.06)
2.289 (58.13)
4.625 (117.47)
0.375 (9.52)
OPTION DESCRIPTION
OPTION
SUFFIX
>}˜ïVÊ«ˆVŽ‡Õ«Êˆ˜«ÕÌÊLœ>À` ....................................................‡Î
>˜ŽÊiÝ>˜................................................................................‡™
OUTPUT CONNECTION NOTE:
œ˜˜iVÌÊ̜Ê-«ii`«œÌʈ˜«ÕÌʜvÊ̅iÊ`iۈViÊLiˆ˜}Ê`ÀˆÛi˜Ê­*£‡ÎʓÕÃÌÊLiÊ
«œÃˆÌˆÛiʈ˜ÊÀiëiVÌÊ̜Ê*£‡x®°ÊvÊ`ÀˆÛi˜Ê`iۈViʅ>ÃÊ>Ê«œÃˆÌˆÛiÊÃÕ««Þ]Ê
Vœ˜˜iVÌÊ*£‡ÎÊ̜Ê̅iÊ*œÃˆÌˆÛiÊÃÕ««ÞÊÌiÀ“ˆ˜>Ê­*œÌʈ}…®Ê>˜`ÊÃiÌÊ
*>}iÊÇÊÌi“Ê££Ê‡ÃiiÊ-*Éʈ˜ÃÌÀÕV̈œ˜Ê“>˜Õ>‡Ê̜Ê>ÊÛ>ÕiʜvÊ
âiÀœ°ÊvÊ`ÀˆÛi˜Ê`iۈViʅ>ÃÊ>ʘi}>̈ÛiÊ«œÜiÀÊÃÕ««Þ]ÊVœ˜˜iVÌÊ*£‡ÎÊ
to the Common terminal (Pot Low) and set Page 7 Item 11 to a
value of 1.
HOOK-UP PROCEDURE:
-/*Ê£\Ê
œ˜˜iVÌÊ̅iÊ«Àœ«iÀʈ˜«ÕÌÊۜÌ>}iÊ̜Ê*£‡£Ê>˜`Ê*£‡Ó°
"/\ÊÕȘ}ÊŜՏ`ÊLiÊ>``i`ʈ˜Ê̅iÊ
ʏˆ˜iÊ̜ʫÀœÌiVÌÊ̅iÊVœ˜ÌÀœ°Ê
A 2 amp fuse is recommended.
-/*ÊÓ\Ê
œ˜˜iVÌÊ̅iÊ*1‡Ê>ÃÊŜܘʈ˜Ê…œœŽ‡Õ«Ê`ˆ>}À>“Ê>LœÛi°
-/*Ê Î\Ê 7ˆÀiÊ Ì…iÊ «œÌÊ œÕÌ«ÕÌÊ œvÊ Ì…iÊ -*ÓäÊ ÌœÊ Ì…iÊ Vœ˜ÌÀœÊ Liˆ˜}Ê
driven.
-/*Ê{\Ê9œÕÊ>ÀiʘœÜÊÀi>`ÞÊ̜Ê>««ÞÊ«œÜiÀÊ̜ÊޜÕÀÊÃÞÃÌi“°
NOTE: Shielded cable is recommended for applications where
pick-up cord length is in excess of 6 feet.
Connect the shield to the common terminal of the ASP20, leaving
̅iÊňi`Ê>ÌÊ̅iÊ«ˆVŽ‡Õ«Êi˜`Êyœ>̈˜}°
CAUTION: When pick-up signal is lost, a master ASP20 will run
at full speed, while a follower ASP20 will go to zero speed.
ACCU-SET SERIES CONFIGURATIONS
MOTOR
PICK-UP
speed
control
motor
PU-2E
speed
control
ASP20
motor
PU-2E
FEED
REEL
TAKE UP
REEL
SPEED
CONTROL
ASP20
Follower motor as % of master motor speed
Constant rate control
PU-2E
motor
speed
control
ASP20
ASP20
PU-2E
speed
control
PU-2E
motor
System for mixing and blending ratio control
www.dartcontrols.com
motor
speed ASP20
control
PU-2E
motor
speed
control
ASP20
Ideal for maintaining precise SCR speed
load regulation
25