DPC200 PRESSURE - VOLUME CONTROLLER TO BE USED WITH EXTERNAL SENSOR
DPC200 ORDER DESCRIPTION
DPC200 Page 10
Copyright © 2000 CMR® C.M.RICHTER EUROPE LTD All rights reserved The information is subject to change without notice Issue GB 2 - 1 2001
CMR CONTROLS
Division of C.M.RICHTER EUROPE LTD
22 Repton Court Repton Close
Basildon Essex SS13 1LN GB
Website : http://www.cmr.co.uk
Tel +44 (0) 1268 287222
Fax +44 (0) 1268 287099
e-mail: sales@cmr.co.uk
GENERAL
CMR manufactures a large range of DPC200 wall or panel mount
pressure or volume controllers to suit many applications. Because of
the variety of control outputs and power supplies it has been
necessary to design an easy to use selection table for anybody to
make up a DPC200 controller specification to satisfy a requirement.
You will find all specifications available with the associated ordering
Code on the DPC200 Controller Selection Table (Page 11) . In order
to select the correct part we have made up a sample selection
below:
DPC200 PART NUMBER
The DPC200 Part Number starts with the selection of the controller
type of enclosure without Lid, with Lid or with Lid and key lock.
DPC200 enclosure without Lid has the Code ’ 66A ’.
DPC200 enclosure with Lid has the Code '66B'
DPC200 enclosure with Lid and key lock has the Code '66C'
As an example, we have chosen the Code 'A'.
The Part Number starts therefore with '66A'
NEGATIVE PRESSURE RANGE
The DPC200 is always supplied without internal sensor and acts as
controller only. If a sensor is required, refer to the CMR P-Sensor,
DPM, V-Sensor, VT-Sensor and F-Sensor specification sheets.
As there is no sensor fitted the Code is always '000'.
The Part Number extends to ‘66A 000’.
POSITIVE RANGE
The DPC200 is always supplied without internal sensor and acts as
controller only. If a sensor is required, refer to the CMR P-Sensor,
DPM, V-Sensor, VT-Sensor and F-Sensor specification sheets.
As there is no sensor fitted the Code is always '000'.
The Part Number extends to ‘66A 000 000’.
OPERATOR FRONT PANEL
The operator panel is an anodized aluminium panel which has
various options as shown on page 9. The choice of plate is
expressed as Plate Type as follows:
Type 'A' has all functions and the sensor control set point is a dial
0...100%. The order Code is 'A'
Type 'B' is similar to Type 'A' except the sensor set point dial is
-100..0..+100% . This type is used , when using a sensor which has
a measurement range i.e. -100Pa - 0 - +100Pa, which means the
sensor can measure from 0Pa to(-)100Pa and from 0Pa to (+)100Pa
and the set point can be adjusted from 0 to (-)100% and 0 to
(+)100%. The Code is 'B'.
Other Types are available such as 'C' up to 'J'. see DPC200
Operator Front Panel on page 9.
In the example we have chosen Type 'A'
The Part Number extends to ’66A 000 000 A’.
POWER SUPPLY
The DPC200 can be ordered for 24VAC with Code '3', 110VAC with
Code '4' and 230VAC with Code '5'.
We have chosen 24VAC which has the Code '3'.
The Part Number extends to ’66A 000 000 A 3’.
CONTROL MODE
Page 4 and Page 5 shows various control modes. The mode
selection is important to set up the controller's output. Look at the
sketches and select the desired mode or ask CMR for assistance.
We have chosen Mode 'B' on page 4.
The Part Number extends to ’66A 000 000 A 3 B’.
CONTROL OUTPUT
The Industry Standard for Output Signals is 0...10V which has the
order Code 'A'. The Control output signal can also be inversed to
provide 10...0V. This is normally required, when a fan must be at
high speed at no pressure feed back. The Code is 'B'.See Page 5
Speed Control Methods.
The Control output for CMR damper motors as described on Page 4
Damper Control Methods is a triac output to drive synchronous
motors open-off-close. The output is generated by the isolation
transformer built into the DPC, which means the output is named
24VAC I (internal) and has the code 'C'. This means no matter what
the power supply is i.e. 24VAC, 110VAC or 230VAC by choosing
code 'C' the control output is always 24VAC (internal) but it is limited
to 350mA.
If AC X (external) Code 'D' is ordered, then the control output is the
same as the power supply i.e. 24VAC, 110VAC or 230VAC non
isolated.
It is advisable to mention what type of equipment shall be driven by
the DPC200 controller during order stage in order to make sure the
control output is capable to drive the used actuator.
We have chosen 24V ACX as control output which has the Code 'D'.
The Part Number extends to ‘66A 000 000 A 3 B D'.
SCALED UNITS
The range is printed on the product label fixed to the lid of the
controller. Normally, the range is printed in % but other ranges can
be selected under this order code. If and LCD or LED is required
then the set point dials are always in %.The set point dials and
manual LCD are always in % and cannot be scaled unless a special
factory order is made. The 3 1/2 digit sensor LCD is factory scaled
to suit the front operator plate ordered. If the front plate is Type 'A'
than the sensor LCD is calibrated as 0-100.0%. If the front plate
Type 'B' is selected than the sensor LCD is scaled to -100% to
+100% over the range. The order code for % scaling is '1'.
The sensor LCD can be ordered calibrated in other engineering
units and full details of range must be specified during order stage.
Pa (Pascals) has the Code '2' , mBar has the Code '3'.
m/s has the Code '4', m3/s has the Code '5'
In the example we have chosen the Code '1' .
The Part Number extends to ‘66A 000 000 A 3 B D 1'
DECIMAL PLACES
If no LCD is fitted then this is N/A (not applicable).
The 3 1/2 digit LCD can only display 1999 or 199.9 or 19.99 or
1.999 all depending on the decimal place setting.
No decimal place can be set to Code 'A' which displays 000
Code 'B' displays 00.0, Code 'C' displays 0.00
Code 'D' displays .000
We have chosen the standard setting 00.0 with Code 'B'.
The Part Number extends to ‘66A 000 000 A 3 B D 1 B'
ALARM FUNCTION
The DPC200 can be supplied with an alarm threshold output board
as described on page 8. The board has a low/high alarm relay and a
buzzer relay. A low and high threshold set point adjuster is on the
front of the control panel. If the sensor signal is below or above the
threshold, a timer can be programmed to switch on the alarm and
buzzer relay. The buzzer can be muted. A repeater relay is available
for remote BMS input. If the alarm board is not required the Code
shall be '0' for 'NO'. If the alarm board is required, the order Code is
'1' for 'AL'
In the example we have chosen Code '0'.
The Part Number extends to ‘66A 000 000 A 3 B D 1 B 0'
FINAL PART NUMBER to order is ' 66A000000A3BD1B0'.
