Oceanic Systems 5700 User manual

Air Volume Monitor
Part Numbers: 5700
USER MANUAL
Document revision 1.00

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CONTENTS
1. OVERVIEW
1.1 FRONT PANEL LAYOUT
1.2 DIAGNOSTIC LEDs
2.DIMENTIONS & CONNECTIONS
2.1 3 & 4 WIRE CONNECTIONS
3. CONFIGURATION
2.1 ACCESSING MENUS
2.2 RANGE KEY - PARAMETERS
2.3 OUTPUT KEY - PARAMETERS
2.4 DISPLAY KEY - PARAMETERS
2.5 ALARM KEY - PARAMETERS
4. ALARM TEST MODE
5. MANUAL ZERO
6. PASSWORD OPERATION
7. CALIBRATION MODE
6.1 OUTPUT RANGE CONFIGURATION
6.2 SENSOR SPAN CALIBRATION PROCEDURE
6.3 CALIBRATION MODE OUTPUT FREEZE
8. PID CONTROL MODE
9. REMOTE DISPLAY
10. COMMUNICATIONS
1. SPECIFICATIONS

OVERVIEW
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These sensors are wall, or panel backplate, mount air pressure / velocity sensors that provides
an output signal of 0-10V and 4-20mA.
The units also features MODBUS communication and an adjustable alarm relay output.
The red LED display shows the actual pressure or velocity/volume in the selected units
depending on the settings. All necessary adjustments can be made via the front membrane
keyboard, the layout of which is shown below.
1.1 FRONT PANEL LAYOUT

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1.2 DIAGNOSTIC LEDs
The red and green LEDs on the keyboard as well as the right hand decimal point on the display
indicate various conditions as shown below.
Green LED ON
Red LED OFF Normal operation
Green LED OFF
Red LED ON Alarm condition – see alarm section
Both LEDs ashing together The display is temporarily showing an alter-
native value.
Green LED ashing Red LED off
Red LED ashing Green LED off See 2.3 output scaling mode.
Right hand decimal point lit
The user has entered the correct password
and the password is still active allowing
parameters to be changed.
Right hand decimal point ashing twice per
second Calibration mode.
Right hand decimal point ashing rapidly up and down keys can now be used to adjust
the calibration of the sensor.
Display shows O LOA d or U LOAd See section 2.2 Over pressure protection

DIMENTIONS & CONNECTORS
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4

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2.1 3 & 4 WIRE CONNECTIONS

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3.1 ACCESSING MENUS
There are menus under the following keys:
(Output)
(Range)
(Display)
(Alarm)
(Control) Pressed together.
To access a menu, hold down the key until the LED display changes (approx 1 second). The
display will now show a parameter and its value. The same menu key is then used to step
through all the available parameters within the menu. After the last parameter has been
displayed the sensor will return to normal operation.
The keys are used to change the value of a parameter once selected.
To save the new value, simply step through to the next parameter.
To cancel the new value, press the zero key.
A parameter is indicated by either a single letter or a group of letters. The following tables
show how each parameter is displayed when the menu keys are pressed.
2.0 CONFIGURATION
3
>0<
>0<

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3.2 RANGE KEY PARAMETERS
Note: A short press on this key will display the Full Scale Range of
the sensor in the selected display units. Sensors with a -/+ range will show Pn
indicating that the P and n parameters both need to be checked to see the
range.
INDICATOR PARAMETER RANGE
SSoftware Version (e.g. 1.15)
Ad Network Address 1-254
A2 Auto-Zero On or Off
PPositive Range
nNegative Range
OPP Over-Pressure Protection 1 (On) or 0 (Off)
FZero Offset
tSet Point
Sn MODBUS Smoothing d or o
AdJ Internal/External Controls I or E
A2t Auto-Zero Time 1-99 hours
FF MODBUS oat format 0 - 3
Software Version
This displays the current software version used. This manual relates to software version 3.87.
Network Address
This is the Modbus network address assigned to the instrument.
Auto-Zero
When set to ON, the internal electronic air valve will remove air pressure from the sensor
periodically, and the sensor will be zeroed. During this period the Output Signal, the Display
and the Modbus registers will be held at their current values.
Positive Range
This is the Positive Range of the sensor and is displayed in Pascals (Pa). This range can be
adjusted within certain limits (Consult CMR).

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Negative Range
This is the Negative Range of the sensor and is displayed in Pascals
(Pa). This range can be adjusted within certain limits (Consult CMR).
Over-Pressure Protection
When set to 1 (ON), the internal electronic air valve will remove air pressure from the sensor
when an over-pressure condition is detected.
After a 1 second delay the air valve will return to its normal operation. If the over-pressure
condition is still present at this time the air valve will remove the air pressure once again. This
routine will continue until the over-pressure condition is removed. If the over-pressure condition
is positive, the display will show O LOAd , and the output will go to 10V. If the over-pressure
condition is negative, the display will show U LOAd , and the output will go to 0V.
Zero Offset
A zero offset in Pa can be entered. This value is added to the sensor reading so that for example,
if -5.0 is entered the sensor will now read -5.0Pa with no pressure applied to the instrument. For
sensor ranges of less than 1000Pa an offset of +/-199.9Pa can be entered. For sensor ranges of
1000Pa or more an offset of +/-1999Pa can be entered.
Set Point
This parameter is to maintain compatibility with earlier versions of the software. For new
projects use the PID setpoint.
Modbus Smoothing
Sets the smoothing of the values read over the Modbus network.
When set to ‘d’ (Display) the display smoothing value is used.
If set to ‘o’ (Output) the output smoothing value is used.

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Internal / External Controls
When set to ‘I’ (Internal), then the network address, range, output smoothing, output mode,
small value shut off, mag factor and alarm threshold are set by the internal controls. The values
will be viewable on the display but cannot be changed by the keyboard.
If set to ‘E’ (External), then the internal controls are ignored and all values are set using the
membrane keyboard.
Changing this value from ‘E’ (External) to ‘I’ (Internal) will cause the previously entered values
for the settings listed above to be over written with the values set at that time on the internal
controls.
To avoid accidentally changing this value, the procedure for changing it is different. With the
display showing AOJ, hold down the key until AOJ ashes. The keys can now be
used to toggle the value.
Auto-Zero Time
Time in hours between auto-zero cycles.
Factory set to 1, but can be increased up to a maximum of 99.
Float Format
Selects the format used to represent oating point values in the modbus registers. See the
Modbus Communications Specication for exact details.