Bimba MFD Manual de usuario
Digital Pressure Switch
User Guide
USER GUIDE
2
Contents
Product Overview and Features....................................................................................................3
Installation and Wiring ..................................................................................................................5
Digital Output Modes.....................................................................................................................6
Analog Output Characteristics.......................................................................................................7
Initial Settings ...............................................................................................................................8
Setting Digital Outputs ..................................................................................................................9
Setting the Zero Point ...................................................................................................................10
Setting Max. and Min. Display Values...........................................................................................11
Setting Up the Key Lock Function.................................................................................................11
Using the Copy Function...............................................................................................................12
Advanced Settings........................................................................................................................12
Calibration and Fine Adjustment Mode .........................................................................................14
FAQ..............................................................................................................................................14
Support.........................................................................................................................................15
3
Product Overview and Features
DPS Series digital pressure switches provide a compact and economical solution for monitoring system
pressure via an integral digital display, two programmable digital outputs and an optional analog output.
Designed for use with MFD FRL products, DPS Series switches can be mounted directly to MFD
regulators, filter/regulators, and soft start valves using available adapter kits. Or, the DPS can be
standalone mounted via the male center-back port, available panel adapter, or threaded mounting
holes.
Significant Features and Benefits
•Easy to read digital display
-Programmable display units: psi, bar, MPa, and kg/cm2
-Dual digital output indicators
-Two programmable display colors
•Multiple output options
-Two individually-programmed sinking (NPN) or sourcing (PNP) digital outputs standard
-One 1-5V or 4-20mA analog output optional
•Technical highlights
-Copy settings to a second pressure switch automatically with the available copy function
-User-selectable hysteresis and switching modes
-IP65 enclosure protection
-Adjustable response time to eliminate chatter
How to Order
Dimensions [mm]
4.4 DP.
4
Engineering Specifications
Accessories
Panel Adapter and Cover:
DPS-PA
5m Data Cable: DPS-C5M
5
Display Features
Installation and Wiring
Precautions
Apply tightening torque to the hex-shaped boss near the pressure port. Do not attempt to install
the pressure switch by turning the switch body. Serious damage to the switch may result.
Wiring Diagrams
Output 1 Indicator
Output 2 Indicator
UP Button
SET Button
DOWN Button
Pressure Display
Pressure Unit Display
OK
NO
6
Sensor Breather Port
DPS series switches include a vent port located on the bottom of the switch housing. The vent
port allows atmospheric pressure to the sensor for accurate measurement. To maintain IP65
enclosure protection, install the supplied tube and sintered breather on the vent port. Or, use a
2.5mm I.D. tube to pipe the breather port to a clean, dry location. Do not attempt to pressurize
the breather port, sensor damage will result.
Digital Output Modes
Each digital output has three field-programmable output modes and can be configured as
normally-open or normally-closed. In normally-open mode, the switch contact is made when the
output is active. In normally-closed mode, the switch contact is broken when the output is active.
For information on setting the output contact mode (NC or NO) see the “Initial Settings” section.
Point Set Mode
Point set mode enables the digital output when pressure increases above the setpoint (P1 or
P2) and disables the output when pressure falls below the setpoint minus system hysteresis.
See “Setting Digital Outputs” for information on setting P1 and P2. System hysteresis can be
adjusted between 1 and 8 decimal places. See “Advanced Settings” for further information on
adjusting system hysteresis.
Normally-Open Contact Mode
Normally-Closed Contact Mode
H = System hysteresis
Breather Port
Supplied Tube
Supplied Breather
7
Hysteresis Mode
Hysteresis mode operates similarly to point set mode but allows the user to set a wider
hysteresis band. The digital output is enabled when pressure rises above H1 or H2 and is
disabled when pressure falls below L1 or L2. For information on setting H1, H2, L1 and L2, see
“Setting Digital Outputs”.
Normally-Open Contact Mode
Normally-Closed Contact Mode
Window Comparator Mode
In window comparator mode, the digital output is enabled when pressure rises above L1 or L2
plus system hysteresis and disabled when pressure rises above H1 or H2 plus system
hysteresis. As pressure decreases, the output is enabled when pressure drops below H1 or H2
and disabled when pressure drops below L1 or L2. For information on setting H1, H2, L1 and
L2, see “Setting Digital Outputs”. To ensure proper function, the difference between H1 and L1
or H2 and L2 must be greater than the system hysteresis, H (see “Advanced Settings”).
Normally-Open Contact Mode
Normally-Closed Contact Mode
H = System hysteresis
Analog Output Characteristics
DPS series switches are available with either 1-5V or 4-20mA analog output signals. The analog
output signal is proportional to the full pressure range of the DPS series switch. Output signals
for 1-5V and 4-20mA models are plotted against pressure below.
1-5V Models
4-20mA Models
8
Initial Settings
The DPS basic settings menu allows the user to setup digital output options, change response
time, and configure the display color and pressure units. To access the basic settings menu,
press and hold the blue “SET” button for three seconds. Press the “SET” button momentarily to
step through the seven settings within the menu. When a setting is selected, the display will
alternate between the setting ID and its value. Use the “UP” and “DOWN” buttons to change a
value and press “SET” to save.
Basic Settings
Setting ID
Value
Measurement
Mode
>3s
Digital Output
1 Operating
Mode
oPS HYS Win
Point Set Hysteresis Window Comparator
See “Digital Output Modes” for more information.
Digital Output
1 Contact
Type
no nc
Normally-Open Normally Closed
Digital Output
2 Operating
Mode
oFF oPS HYS Win
Off Point Set Hysteresis Window
See “Digital Output Modes” for more information.
Digital Output
2 Contact
Type
no nc
Normally-Open Normally Closed
Response
Time
2.5 25 100 …
2.5mS 25mS 100mS …
Increase response time to reduce chatter when pressure fluctuates near the setpoint.
oE1
oE1
0.0
oE2
oE2
rES
9
Display Color
5oG 5oR Grn rEd
ON: Green ON: Red Constant Green Constant Red
ON: Green = Display turns green when the linked output is enabled
ON: Red = Display turns red when the linked output is enabled
See “Advanced Settings” for information on linking an output to color.
Display Units
PA GF bAR P5i
MPa kgf/cm2bar psi
Measurement
Mode
Setting Digital Outputs
Press the blue “SET” button momentarily to access the pressure setting menu. Press the “SET”
button repeatedly to step through the available pressure setting variables. When a variable is
selected, the display will alternate between the variable ID and its value. Use the “UP” and
“DOWN” buttons to change a value and press “SET” to save.
Digital Output Settings
Variable ID
Value
Measurement
Mode
L1
60.0 60.1
H1
65.0 64.9
CoL
Uni
0.0
H-1
L-1
0.0
10
L2
30.0 30.1
H2
35.0 34.9
Measurement
Mode
Note: If output 2 is disabled in the basic settings menu, pressure variables for that output will not
appear in the output setting menu. Additionally, outputs configured for point set mode in basic
settings will only show P1 and P2 variables.
Setting the Zero Point
The zero point of DPS series switches can be reset to counteract effects of changing
atmospheric pressure. This feature is not intended as an offset and the zero point should only
be reset when system pressure is relieved. To reset the zero point, press and hold the “UP” and
“DOWN” arrow keys simultaneously until the display reads zero pressure.
L-2
h-2
0.0
0.1
0.0
Press and Hold
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