DYNAPAR SimTach A STA00 User manual

TECHNICAL MANUAL 810
-110
____ ~ __ =:=_~ . __ =~~=~-=-:_=-==_=~ __ .~_-=- _=_-_~=_==~=_=-~=-==- -=~--=-=-=~~ ___ ~~_5; It1 Tach A_
~=-.::-=--===~===--=.=-=~~--==~==--------=====-==-===----- .. ---===-==--==---------. ANALOG INPUT-
.----- .. ---.-.-----.--.-------- .. -----~---------.- .. -.------------------ SPEED INDIC A'TOR
_. ____ • __ ~ ____ , -. ____ ~ ____ ._. ____ .• _____ .• ______ ~_~__,_____--------. ___ . ________ . ____ -----+- __ ~~ _______ ._ JI-\.
. --- ---------------·---'--'------ ___________ ~----.--,....,...T ._ .. ___________________ .---~---.______+_____!-'--~--.--------
____ --------- .. r--------------------.. . __ . _______ . __ :_ ----~- .. ---
- .--.---l---~ ___ _
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DESCRIPTION
The SimTach A is an industrial quality, digital voltmeter
which provides a calibrated speed readoutfrom a variety
of signal sources. Its wide range of Inputs allows inter-
face to process signals, DC tachometers and motor
drives. An optionaldigitalcalibratoroffersprecisescaling
while maintaining accuracy. Easyinstallation and convi-
enientswitchselectionsmake
itthe best choice for speed
indicator applications.
FEATURES
• Large, ± 4-1/2 Digit LED Display
• Switch Selectable 20, 200, and 600 VDC
Ranges
• Selectable Display Decimal Point
• Fast or Slow Display Update Rate
• Sealed NEMA 1 Front Panel
-.- ... -.------ _.-------_ ... __ ._. _.- -.---~-.- -_.
CONDENSED SPECIFICATIONS
• 0,1 % Accuracy
• Optlon,,1 O.XXX Digital Calibrator
• s 71 ppm / °C. Temperature Drift
• )(, to )(,xxxx: Decimal Point Range
• 1/1 DIN Panel Cutout
• 11i or 230 VAC Operation
INDEX TO CONTENTS
Op~rm:ion
Applj§ations
Inst§lIation
Wirin.!l
Sp~§jfications
Orq~ring Information
DYNIlPIlR
page 2
page 2
page 3
page 3
page 4
page 4

OPERATION
Input Range Selection
The inputsignal is applied to a precision resistorvoltage
divider network which scales the signal down to the 2
VDC internal range. The 20, 200 and 600 volt range
switches provide +10, +100 and +1000 selections.
Gain Adjust Pot (ST AxO)
Thepotentiometerand amplifierprovide gainadjustment
to calibrate the display to readout
in engineering units.
Digital Calibrator (STAx1)
The divided input is routed through a digital-to-analog
converter (DAC),which multiplies the signal bythescale
factor set on the BCD switches as
O.XXX . (Note that a
setting of 0.000 =Calibration of 1.)
Analog-to-Digital Converter
The ADC uses dual-slope conversion and auto-zero
circuitry to povide a full
4-1/2 digit range. A selectable
clock source allows fast or slow display updates to meet
differing application requirements.
LED Display
The 4-1/2 digitpovides asignforinputsthat range below
zero, and selectable decimal point displays.
APPLICATIONS
Actual Speed Indicator
Using DC Tach Feedback
I
/ '\
IIIII
DC Drive
,If
~ OCT,,,,
Motor
DC Tachometer Feedback
SimTach A
To provide a calibrated speed readout of motor RPM, a
DC tachometerwith a1 0volt-per-thousand RPM output
is mounted to the motor. The maximum motorspeed is
7200 RPM, for which the tachometer will generate an
output of 72 volts DC.
The 200 VDC input range is selected; no decimal point
display
is chosenfor RPM readout. The displaywill read:
72 volts input x 20,000 max. display =7200
200 volt range
No adjustment
of the gain adjust pot is needed (factory
set for gain of 1).
Vin
Page 2
RANGE
Vi nit 0
20 VOLT
'00 VOLT
- £23'-15 I
Vin/l00
'.lin/1ooD
r----------------------
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OPTIONAL DIGITAL CALIBRATOR
SlmTach A Block Diagram
Actual Speed Indicator
Using Motor Armature Voltage
+
Armature
Motor
Armature Voltage Feedback
ANALOG TO
DIGITAL
CONVERTER
SimTach A
fAST
An 480voltDC motor is drivinga conveyoratamaximum
speed
of 360 inches per minute.
The
600 VDC range is needed, and a .x decimal point
display is selected. With no calibration, the display is:
480 volts input x 20,000 max. display =480.0
2000 volt range
The calibrator
is calculated by the folrmula:
360.0 desired =0.750
480.0 expected
The
BCD switches are set to 0.750 to calibrate the unit.

INSTALLATION
1. PANEL MOUNTING
Make a panel cutout as shown below (right). Affix the
adhesive gasket (for watertight seal, if required) to the
panel. Remove the panel straps and slide the unit
through the cutout. Slide the panel straps into the
enclosure guides. Secure the unit by tightening the hex
washer head screws into the guides.
~ I r- panel thickness 1/18" to 1/4"
I
1
< depth behind bezel
1<----- 5.88 144.3mm
WIRING
2. INPUT POWER
(For models STA-S-x only: Select 115 or 230 VAC
operation with a slotted screwdriverthroughtthe cutout.
Unit
is factory set for 230 VAC.)
Supply
AC powerthrough a separtely fused circuit. Unit
requires externalfusing rated 1/4
A. for 115 VAC or1/8 A.
for 230 VAC, slow blow type. Connect terminal #3 to
BUILDING GROUND!
3. SIGNAL INPUT
Connect the signal input, noting polarity of the + and -
terminals, using shielded wiring with the shield con-
nected to terminal:':'3.
Select one of the three input voltage ranges on the DIP
switches, accordingtothemaximum signalinputvoltage.
DO NOT EXCEED 600 VDC!
VAC@8VA f>f» xl:!~
5G/8OHz 1liI1i~'II\~
'l'f?ilFUS" WIllI I~lt:il INPUT • DEC. roT.
:11: U RANGE
:..' :.. UPDATE HAlE
~ i !
1 2 3
Page 3
CONFIGURAllON SWITCHES
ijA(liU
TI
1.78~/+.04
45~/+1 mm
L--------I1L
f.oIl<~---- 3.58~/+.04
91·0/+1 mm
N C
~ ~ ~
1 2 3
I
allow I
-------'>~. ::. ~
each side
between
cutouts
115/230VAC, SO/60 Hz, 6VA
SIGNALCOMMON
SIGNAL INPUT
C
Z
CJ
,
3!:
+
3!:

SPECIFICATIONS Page 4
Input Power:
Display:
Decimal Point:
95 to 130 VAC, 50/60 Hz, or
190to 260 VAC, 50/60 Hz, 6
VA
± 4 -1/2 Digit, 0.56" Red LED
Switch Selectable XXXXX. to
X.XXXX
Scale Factor Range:
Gain Adjust Pot:
Digital Calibrator:
Accuracy:
Stability:
5% to 200%
0.001 to 0.999
(0.000 =Calibration of 1)
±0.1% -0/+1 Digit
Display Update Rate: Switch Selectable Operating Temperature: 0 to +50 °C. (32 to +122 of.)
Fast:
Slow: 2
Hz (2 times persecond)
0.5 Hz (every two seconds) Dimensions:
Overall: 1.98" x 3.78" x 6.03"
Overvoltage Indication: Display FlashesAll
"O's"
50 mm x 96 mm x 150 mm
1.78" x 3.58" (-0/+0.04")
Cutout:
Signal Input Range: Switch Selectable 45 mm x
91 mm (-0/+1 mm)
1/16" to 1/4"
o to ± 20/200/600 VDC Panel Thickness:
Panel Depth: 5.68" (144 mm)
Weight: 1.4Ibs.
ORDERING INFORMATION
MODEL
STAOO
STAEO
STASO
DESCRIPTION
SimTach A Analog Input Speed Indicator, 115
VAC Operation
SimTach A Analog Input Speed Indicator, 230 VAC Operation
SimTach A Analog Input Speed Indicator, 115/230VAC Selectable Operation
SimTach A Analog Input Speed Indicator with Digital Calibration, 115 VAC Operation
SimTach A Analog Input Speed Indicator with Digital Calibration, 230 VAC Operation
STA01
STAE1
STAS1 SimTach A Analog Input Speed Indicator with Digital Calibration, 115/230VAC Selectable Operation
WARRANTY
Standard products manufactured by the Companyarewarranted to befree from defects inworkmanship and material for
aperiodofoneyearfromthedate of shipment,and productswhich aredefectiveinworkmanshipormaterialwill be repaired
or replaced, attheoption ofthe Company, atnochargetotheBuyer. Final determinationas to whethera productis actually
defective rests with the Company. The obligation of the Company hereunder shall be limited solely to repair and
replacement of products that fall within the foregoing limitations, and shall be conditioned upon receipt by the Company
of written notice of any alleged defects or deficiency promptly after discoverywithin the warranty period, and in the case
of components or units purchased by the Company, the obligation of the Company shall not exceed the settlement that
the Company is able to obtain from the supplierthereof. No products shall be returned to the Company without its prior
consent. Products which the Company consents to have returned shall be shipped F.O.B. the Company's factory. The
Company cannot assume responsibility or accept invoices for unauthorized repairs to its components, even though
defective. The life ofthe products of the Company depends, to a large extent, upon thetype ofusagethereof, and THE
COMPANY MAKES NO WARRANTYAS TO FITNESS OF ITS PRODUCTS FOR SPECIFICAPPLICATIONS BY THE
BUYER NOR AS TO PERIOD OF SERVICE UNLESS THE COMPANY SPECIFICALLY AGREES OTHERWISE IN
WRITING AFTER THE PROPOSED USAGE HAS BEEN MADE KNOWN TO IT.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO ANY WARRANTY OF MERCHANTABILITY OR OF FITNESS FOR A
PARTICULAR PURPOSE.
SERVICE:
Include:
Ifthis product requires service, call Dynapar Corp. for an RMA (Return Material Authorization)
number, pack it in a sturdy carton and ship prepaid to: Service Dept. at address below.
1. Description of problem 3. Purchase order number
2. Name of responsible person 4. Return shipping instructions
DANAHER CONTROLS • 2100 W. Broad St., P.O. Box 368, Elizabethtown, NC 28337 TEL: [phone] FAX: (847}662-6633
160 0250 0132 Printed
in U.S.A. April 20,
1992