Danaher Veeder-Root 7990 Series User manual

1
Technical Manual
701930-0000
7990
Totalizer/
Hourmeter/
Timer/
Ratemeter
Introduction
The Veeder-Root brand Series 7990 is the best value in a low cost, versatile indicator
for industrial applications. Highly flexible, it can be programmed at installation to
operate as a totalizer, rate indicator (Model 799008-201 only), or elapsed time meter.
With this unique functionality, it can be used to totalize parts production, keep track
of machine hours, indicate process times, or show production rate. Input scaling
accommodates a variety of signal sources with the ability to readout in meaningful
engineering units. Use two or three of them and have matching control panel
instrumentation for count, speed, and time. Standardize them throughout your
plant, and reduce inventory by stocking just one indicator instead of several.
Many convenience features are included, such as adhesive labels preprinted with
popular engineering unit identifiers, security locks for reset and programming, and
accessory snap-on adaptor modules. The adaptor modules allow screw-terminal wire
connection and/or accommodation of high-voltage input signals for timing or
counting applications. Accessory
panel adapters, available with or
without a locking key reset, allow
easy mounting and retrofit to
older and larger mechanical,
electrical or electronic products.
Features
• Large, easy to read 8-digit LCD (5-digit,
rate mode)
• Heavy, diecast enclosure for industrial
duty application
• Simple programming procedure selects
operating mode and other functions
• Tamper proof programming mode lock
• Operates without external power – long life
lithium battery
• Totalizer mode has input scaling and
selectable decimal point
• Rate mode utilizes a time interval method
for improved accuracy.
• Timer modes for hours, minutes, seconds
with choice of time increment
• Front panel reset, remote reset, or
nonreset operation
Overview
Construction page 2
Rear Panel Features page 2
Specifications page 3
Panel Mounting page 3
Setup
Wiring page 4
Front Panel Operation page 4
Count Mode page 5-6
Hour Meter Mode page 6
Timer Mode page 6
Rate Meter Mode page 6-7
Option Modules page 7-8
General
Warranty page 8
Index
Veeder-Root brand

2
OVERVIEW
CONSTRUCTION
Connector
Connector can be pre-wired.
Locks securely in place
Compact Design
Rugged, diecast housing
8 digit, 0.35" (8.8mm) high
Identifies programmed function: Count, Rate, Timer,
Hour-Meter
Mode Indicators
Large LCD Display
Long-Life Internal Battery
Lithium cell provides continuous "ON" operation.
Nonvolatile data and program memory
Rear Panel Features
Panel Mounting Clips
Fast, secure installation
Reset and Program Enable
Pin jumpers allow access or inhibit to
reset and programming functions

3
SPECIFICATIONS
General Functions
Totalizer: Eight digit capacity, programmable prescaler
(divide by 1 to 9999), X1 or X2 (count both
leading and trailing edge) logic; Front panel
or remote reset
Elapsed Time Indicator: Eight digit capacity; registers elapsed time
when signal input is held ON; Programmable
resolution of hours, tenths of hours,
hundredths of hours, minutes, tenths of
minutes or seconds; front panel or remote
reset
Hour Meter: Eight digit capacity; registers hours in whole
units, tenths, or hundredths, non-resettable
*Rate Meter: Four digit capacity; time interval method with
prescaler (multiply by .0001 to 9999)
converts pulses to rate
Mechanical
Dimensions: 35.6 mm x 71.9 mm, x 33.3 mm deep
Panel Cutout Size: 66.8 mm x 33.2 mm
Panel Thickness: 2mm to 13mm
Depth Behind Panel: 20.7 mm
Display
Type: Liquid Crystal Display
Height: 0.35" (9mm)
Number: 8 digits (4 digit in Rate Meter
mode)
Decimal Point: Programmable from 0 to 4 places
(0 to 3 places for Rate)
Power Source: Internal Lithium Battery
Battery Life: Eight year typical life
Temperature Range: 0°to +75 C°(+32°to +167°F)
Inputs
High Speed
Count Speed: 10 KHz, 50µs min. high/low
pulse; for use with TTL, CMOS,
Open Collector, NPN transistor or
magnetic sensor
Sensitivity: Low Level Logic < 1.0 VDC
High Level Logic > 2.0 VDC
Maximum Voltage: 28 VDC
Low Speed
Count Speed: 40 Hz, 12ms min. pulse; for use
with isolated switch/relay contact
Sensitivity: Low Level Logic < 1.0 VDC
High Level Logic > 2.0 VDC
Maximum Voltage: 28 VDC
Reset
Types: Front panel button and remote
input through contact closure
between rear terminal pins 4 and
5. (Applies only when configured
for Count or Elapsed Time modes)
Min. Pulse Width: 0.5ms
▲
▲
PANEL MOUNTING
Install unit in panel cutout using gasket and hardware provided per the drawing below.
Note: Do not overtighten screws. Tighten only until gasket begins to compress.
Mounting
Screws
2.83 in
72 mm
2.61 in
61 mm
1.40 in
36 mm 1.28 in
32,5 mm
0.715 in
18 mm
▲
▲
Panel Cutout
66.8mm x 33.2mm
Mounting
Clips
Gasket
1/32" Thick
*Rate mode, model 799008-201 only

4
WIRING
The FLEX uses a detachable terminal strip to make wiring more convenient. Included are the terminal strip and 4 colored wires
with locking tangs attached. The black common wire is installed in the terminal strip at the factory, and should always be used in
that position. Wires can be removed from the terminal strip by inserting a small screw driver into the slot on the side of the strip
and gently pressing on the locking tang while pulling gently on the wire.
Note: Do not install wires for functions that are not used.
OPERATION
VEEDER-ROOT
12345678
COUNT HR TIMER RATE
1. Reset Button
2. Programming Stylus
3. Process Value
4. Mode Display
1. Reset Switch: Used to reset the present value in Count or
Timer mode. The Reset function will only be activated if the Reset
Enable jumper is set to the ON position, or if the rear terminal
Reset Enable input (pins 4 and 5) is connected. In Set-up mode,
this button is used to set parameter values by incrementing the
highlighted number or scrolling through the possible choices.
2. Programming Stylus: Used in Set-up mode to advance from
one parameter to the next and to move between digits in a
numerical value.
3. Present Value: Displays the current Count, *Rate or Time
value in operating mode. In Set-up mode displays the parameter
value.
4. Operating Mode Display: Based on how the unit is
programmed, one of the 4 above displays will be illuminated to
indicate the chosen mode of operation. A flashing display
indicates that the controller is in Set-up mode.
SETUP
*Rate mode, model
799008-201 only

5
SET-UP OVERVIEW
Located on the back of the unit are two jumpers which are used to enable operation of the front panel reset button and
programming stylus. Before beginning the set-up procedure it is necessary to set these two jumpers to the ON position. After set-
up is complete, the jumpers may be moved to the OFF position to prevent unauthorized changes or accidental reset of the count or
elapsed time value.
Operating Mode Selection
COUNT HR TIMER RATE Depressing the recessed stylus will activate the Operation Mode selection menu. All four mode
indicators will be illuminated with the presently chosen one flashing. Use the Reset key to scroll
between the modes. Once the desired mode is flashing, it can be entered for set-up by depressing the
stylus key.
00011
COUNT
Count Logic
Depress the stylus key until the digit on the far left of the display begins to flash. This digit selects the
count logic, which indicates whether counting is done on only the falling edge (1) of the input or both the
rising and falling edge of the input (2). Use the reset key to toggle between the two values. Default is 1.
Note: A prescale value of 0000 is not valid. If no prescaling is required, leave this
parameter at the default value of 0001.
The four digits on the right-hand side of the display represents the value by which the input signal will
be divided before a pulse is sent to the display counter. For example if 20 pulses represented one
display unit, a value of 20 would be entered for this parameter. The value can be set by depressing the
reset key to increment the currently flashing number, starting with the right most digit. The stylus key
is used to scroll to the next digit to the right on the display. Default value is 0001.
Prescale Value
0001
COUNT
COUNT MODE
In Count Mode, the unit operates as an eight digit decimal totalizer.
Leading zeroes are suppressed. The reset button, if enabled, and the
remote reset input can reset the count to zero at any time.
Counting will not resume until the reset is released.

6
Decimal Point Position
After the count logic has been set, depressing the stylus key will bring up the decimal point position
display. The position can be changed by depressing the reset key. Each successive press of the key will
move the decimal position one place to left, up to a maximum of four places. Default is zero places.
0.0000
COUNT
After the decimal position has been set, depressing the stylus will cause the unit to return to Operating
mode.
Display Resolution
The accumulated time can be displayed in whole hours, tenths of hours or hundredths of an hour.
Depressing the reset switch will scroll the display between these three choices. Default is whole hours.
HR
After the display resolution has been set, depressing the stylus key will cause the unit to return to
Operating mode.
In Hour Meter mode, the unit accumulates time whenever the input
is held active. Front panel and Remote Reset functions are
inoperative. The Present Value can only be reset by entering Set-up
mode.
0
0Display Resolution
The accumulated time can be displayed in one of the following resolutions: seconds, minutes, tenths of
minutes, hours, tenths of an hour, hundredths of an hour. Depressing the reset key will scroll the
display between these six choices. Default is seconds.
After the display resolution has been set, depressing the stylus key will cause the unit to return to
Operating mode.
SEC
In Timer mode, the unit accumulates time whenever the input is
held active. The reset button, if enabled, and remote reset can be
used to reset the timer at any time.
TIMER
Prescale Value
The four digits on the right hand side of the display represents the value by which the input signal will
be multiplied before a pulse is sent to the display counter. This value can be set in a range from 0.001
to 9.999. Depressing the reset key will move the decimal position to the right. After the position has
been set, depressing the stylus key will enable the value to be set. Use the reset key to increment the
currently flashing number starting with the right-most digit. The stylus key is used to scroll to the next
digit to the right on the display. Default value is 1.000
Note: A prescale value of 0000 is not valid. If no prescaling is required, leave this
parameter at the default value of 1.000.
1.000
RATE
Note: In count mode this parameter serves as a cosmetic decimal point that will not
effect the calibrated resolution. For example, if the display showed 123 with the Decimal
Point Position set to 0, changing the position to 1 will cause the display to show 12.3.
In Rate Mode (Rate mode, model 799008-201 only), the unit displays
events per time. It can be use as a tachometer or to display other
rates; production, flow, etc.
SETUP
HOUR METER MODE
TIMER MODE
RATE MODE

7
OPTION MODULES
Three option modules are available to snap-mount to the rear of the
7990: a screw terminal adaptor; an AC/DC input module and a
Triac Input module.
1. Remove the two jumpers from the back of the instrument that enable the reset and stylus keys. Place
these jumpers in their corresponding positions on the back of the option module.
2. Place the six-position pin extender into the connector on the bottom of the option module.
3. Position the option module so that the pin extender lines up with the connector on the back of the
instrument. Press together until the option module snaps into position flush to the back of the
instrument.
Option Module Installation
Rate Prescale Example:
This unit determines rate based on input frequency, thus if the Prescale Value is left at 1.000, the value
displayed would be number of pulses per seconds. Based on this, the basic formula for the Prescale
Value is:
X# of seconds
1= Prescale Value
1
Pulses per
Display Unit
1
360 X60 1= .167
Gallons per hour can be displayed using a 20 pulse per gallon flow meter as the input by setting the
Prescale Value according to the formula below:
Revolutions per minute (RPM) can be displayed using a 360 PPR encoder as the input by setting the
Prescale Value according to the formula below:
1
20 X1= 180.0
3600
Decimal Point Position
After the left-most digit on the Prescale Value has been set, depressing the stylus will bring up the
Decimal Point Position Display. This parameter applies to the rate display and is not related to the
decimal point position for the Prescaler. The position can be changed by depressing the reset key. Each
successive press will move the decimal position one place to the left up to a maximum of three places.
Default is zero places.
Note: In Rate mode, this parameter serves as a function decimal point that will effect the
displayed resolution. For example, if the displayed value was 123 with the Decimal Point
Position set at 0, changing the decimal point position to 1 would cause the display to
read 123.X, with X representing tenth of a unit resolution.
0.000
RATE

8
Option Module Wiring and Installation
The Screw Terminal Adaptor (Part # 328992-010) provides the convenience of screw terminal connection
of input signal and remote reset. Wire signal and reset input according to the wire diagram on page 4.
The AC/DC Input Module (Part # 328992-020) allows use of a high-voltage input signal of 24 to 270
volts AC or DC. Impulse frequency response is 0 to 10 Hz. It is optically isolated for maximum
immunity to electrical transients and interference. Refer to the diagram below for wiring information.
The Triac Input Module (Part # 328992-030) allows use of a 115 VAC, 50/60 Hz switching devices as
input signal source. Impulse frequency response is 0 to 10 Hz. The module is optically isolated. Refer
to the diagram below for wiring information.
WARRANTY
Standard products manufactured by the
Company are warranted to be free from defects
in workmanship and material for a period of one
year from the date of shipment, and products
which are defective in workmanship or material
will be repaired or replaced, at the option of the
Company, at no charge to the Buyer. Final
determination as to whether a product is
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
discovery within 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 supplier thereof. 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 of
the products of the Company depends, to a large
extent, upon the type of usage thereof, and THE
COMPANY MAKES NO WARRANTY AS TO
FITNESS OF ITS PRODUCTS FOR SPECIFIC
APPLICATIONS 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.
Danaher Controls
1675 N. Delany Road
Gurnee, IL 60031–1282
Phone: [phone]
Fax: [phone]
Printed in U.S.A.
#701930-0000
19 February 1995
Revision none