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S628_StrainGauge_man Technical Manual
702139-0005
Series S628
Strain Gauge
(S628-6XXX)
Introduction
Your Veeder-Root brand S628 Strain Gauge is one model in a family of 1/8 DIN units
which offers breakthrough display technology as well as easy-to-program single-line
parameters. Designed to provide instant visual feedback regarding an applications key
input value, the S628 not only has a 0.71 high LED display (27% larger than other 1/8
DIN units), but also the ability to change display color based on process status
(programmable parameter in Operation Mode). Easy programming is made possible via a
help function and a secondary legend display.
This manual will guide you through the installation and wiring of your S628 unit with
information on proper panel mounting and rear terminal layout and wiring instructions.
In addition, the instruments operation, programming, and configuration modes are
thoroughly explained. The Operation Mode provides day to day operation and allows
editing of preset values. The Program Mode enables the configuration of various
parameters prior to initial operation. These parameters include those for basic
configuration as well as other settable features which will enhance the functionality and
usability of the device. The
Configuration Mode allows
selection of how outputs and
special functions are utilized.
This manual also provides
information on the S628
Strain Gauge's alarms;
transistor, relay, and linear
outputs; product
specifications; and ordering
and warranty procedures.
Index
Installation
Panel Mounting
page 2
Wiring
page 3
Operation
Front Panel
page 4
Operation Mode
page 5-6
Programming
Program Mode
page 7-10
Configuration
Configuration Mode
page 11-13
Appendix A
Specifications
page 14
General
Notes
page 15
Ordering Information
page 16
Warranty
page 16
Features
AWESOME 0.71 high digit LED display
Programmable color change display based on
an event
Programmable help function and secondary
legend display
High and low alarm outputs
Compatible with 6 wire strain gauge inputs
Field selectable 5 or 10 Volt, 60 mA excitation
voltage
Tare function
Standard outputs: two NPN transistors & one
relay (optional 2nd relay)
100 ms sample time with 0.03% accuracy
Optional RS-485 plug in card
CE approved
Veeder-Root
brand 2
I N S T A L L A T I O N
PANEL MOUNTING
100mm
10mm
Mounting Grooves
The instrument can be mounted in a panel with a thickness of up to 6mm. The
cutout(s) should be made based on the recommended panel opening illustrated in the
drawing above.
Insert the unit in the panel through the cutout. Ensure that the
panel gasket is not distorted and the instrument is positioned
squarely against the panel. Slide the mounting clamp into place
on the instrument, as shown to the left, and push it forward until
it is firmly in contact with the rear face of the mounting panel and
the tabs on the bracket arm are seated in the mounting grooves
on the side of the unit.
The electronic components of the instrument can be removed from
the housing after installation without disconnecting the wiring.
To remove the components, grip the side edges of the panel and
pull the instrument forward. Take note of orientation of the unit
for subsequent replacement in the housing.
Bracket Arm
2
3
4
5
6
7
8
24
23
22
14 15 16 17 18 19 20
10
1
1
12
VEEDER-ROOT
PGM
RST
OP1
OP2
48mm
96mm
82344
PANEL
CUTOUT
SIZE
45mm
+0.5 -0.0
92mm +0.5 -0.0 3
I N S T A L L A T I O N
WIRING
REAR TERMINAL CONNECTIONS
Transistor Outputs
Your unit comes standard with 2 NPN outputs which are activated by
each of the alarms. Transistor Output 1, which is tied to Alarm 1, is on
Terminal #7. Transistor Output 2, which is tied to Alarm 2, is on
Terminal #9. Terminal #8 serves as the common connection for both
transistor outputs.
Relay Outputs
Your unit comes standard with a relay output which is tied to Alarm 1.
Terminal #19 is NC, Terminal #20 is common, and Terminal #21 is NO.
A second relay output tied to the operation of Alarm 2 can be added as an
option at the time of order or later installed in the field. Terminal #22 is
NC, Terminal #23 is common, and Terminal #24 is NO.
Terminals 11 & 15 are not used.
Strain Gauge Inputs
The S628 accepts a 6 wire strain gauge input. Terminals #1 and #2
are used for the negative and positive inputs repectively. Terminal
#5 provides the negative side of the bridge excitation, while
Terminal #6 is used for the positive supply. Terminals #3 and #4
are used to sense the excitation voltage supplied to the bridge and
compensate for errors due to lead resistance or drift in the
exctitation voltage.
Control/Digital Inputs
A digital input board, which utilizes Terminals #16 & #17, can be
installed as an option. The input can be programmed in
Configuration Mode to perform one of two functions:
- Tare: When activated, the unit will create an automatic offset
by referencing the currently measured value as the new zero
point.
- Security: When activated, the Program and Calibration
Modes will not be accessible from the front panel.
Please note that this option is mutually exclusive with the RS-485
serial communication option.
Input Power
For an AC powered unit, Terminal #13 serves as the line or Hot side
connection for AC powered units and as the positive side for DC
powered units. The neutral side for AC powered units and the
negative side for DC powered units are connected to Terminal #14.
Serial Communication
An RS-485 communication board, utilizing ASCII protocol, can be
installed as an option. Terminals #16 & #17 serve as the B and A
connections respectively, while Terminal #18 is connected as the
common.
Linear Output
An option board may be installed that provides a 10 bit linear output
signal relative to the Process Value. Terminal #12 is the positive side of
the connection, and Terminal #10 is the negative side. The default range
of the output is 4-20 mA, but can be changed via the Configuration Mode
to 0-20 mA, 0-10 VDC, 2-10 VDC, 0-5 VDC, or 1-5 VDC.
Relay 2
2
3
4
5
6
7
8
24
23
22
14 15 16 17 18 19 20
10
1
1
12
B A
COM
Relay 1
Power Supply
RS-485 Comm.
Signal -
Signal +
Supply Sense +
Supply +
NPN Out 1
NPN Out 2
Common
Negative
Positive
Linear Output
Supply Sense -
Supply -
Digital Input 4
VEEDER-ROOT
82345
H
OP1
OP2
PGM
RST
O P E R A T I O N
FRONT PANEL
Down Key
Scroll Key Program Key
Reset Key
Secondary Display
Primary Display
Output Indicators
Scroll
In Operation Mode: Used in Edit Operation to
decrement the digit highlighted by the Scroll key.
In Program & Config. Modes: Used in Edit Operation to
decrement the digit highlighted by the Scroll key, if the
setting is a numerical value, or present the next in the
series of choices for that parameter.
Program
In Operation Mode: Used to move between the process
value display & the presets and to enter an edited
preset value. Holding the key down for 3 seconds will
cause the unit to enter Program Mode.
In Program Mode: Used to move from one parameter to
the next and enter the edited parameter values.
Holding the key down for 3 seconds will cause the unit
to return to Operation Mode.
In Config. Mode: Used to move from one parameter to
the next and enter the edited parameter values.
In All modes: Moves the unit into Edit Operation,
which is indicated by the left most digit flashing.
Successive presses of the key are used to move to the
digit to be edited. Wrap around will occur from least
significant digit to most significant digit.
Reset
In Operation Mode: Resets a latched alarm if pressed
while the process value is being viewed. Pressing this
key while viewing the max or min value will cause
those values to be reset.
In Program & Config. Modes: No function.
Key
Primary
In Operation Mode: Default display is the Process
Value. Can be scrolled using the program key to
display other Operation Mode values. If the "Help"
function is enabled, this display will first show the
parameter description for 3 seconds (example - page 6).
In Program & Config. Modes: Displays the value or
selection for the current parameter. If the "Help"
function is enabled, this display will first show the
parameter description for 3 seconds (example - page 7).
Secondary
In Operation Mode: Provides an alpha or numeric
indentification of the value on the primary display.
This display is blank when the Process Value is being
shown.
In Program & Config. Modes: Provides a 1 digit alpha or
numeric character to indicate which parameter value is
being shown on the primary display.
Output
Indicators
In Operation Mode: Illuminates when Output 1 and or
Output 2 is active.
In Program & Config. Modes: No function.
Display Functions
Key Functions
Function
Key
Function
Down
Key
Key Functions
Function
In Config. mode: Holding down both keys for 3 seconds
will cause