RECO SensorLine RM-DPC Micro FP User manual

Operating and installation instructions
Differential pressure monitor
RM-DPC Micro FP
SensorLine

RM-DPC Micro FP Documentation
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Table of contents
1 Safety instructions...................................................................................................................................3
2 Equipment specification ..........................................................................................................................3
3 Assembly................................................................................................................................................. 4
4 Step-by-step installation ..........................................................................................................................4
5 Step-by-step settings...............................................................................................................................6
5.1 Function in delivery status ............................................................................................................6
5.2 Display and setting elements........................................................................................................6
5.3 Setting parameters .......................................................................................................................8
5.4 Parameter list ...............................................................................................................................9
6 Details on device function .....................................................................................................................10
6.1 Two-position controller (Parameters 01, 02, 03, 04, 05)............................................................. 10
6.2 Differential pressure monitor (Parameters 01, 04, 05)................................................................ 11
6.3 Timer function (Parameters 06, 07, 08)......................................................................................12
6.4 Self-monitoring ...........................................................................................................................12
7 Troubleshooting ....................................................................................................................................12
8 Text messages on the display............................................................................................................... 13
8.1 Operating messages...................................................................................................................13
8.2 Additional information .................................................................................................................13
8.3 Alarm messages.........................................................................................................................13
9 Glossary ................................................................................................................................................14
10 Technical specifications ......................................................................................................................15
Regulations
VDE 0160 EN 60.439 Part 500
EN 50178 2006/95 EC
Legend
Important note
Important warning

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1 Safety instructions
When connected to the mains, the RM-DPC Micro FP differential pressure monitor is live and poses an
electrical hazard. Device failure, serious or even fatal injuries may occur as a result of improper installa-
tion of the connected equipment. In addition to the general safety regulations for equipment in industrial
electrical installations therefore, pay particular attention to the following points:
- The device may only be installed by qualified experts, in accordance with the provisions of
IEC 364, DIN VDE 0105 for electrical equipment.
- All applicable laws, conditions, rules and regulations governing the setting up of electrical equipment
must be observed in respect of the installation site.
- Equipment with protection rating IP00 without covers may only be configured by authorised expert
staff when disconnected and whilst observing the local safety and accident prevention regulations.
The RM-DPC Micro FP may only be operated in the permitted operating area.
Switch off the mains supply before replacing the differential pressure monitor or any compo-
nents connected to it. Otherwise the equipment may be damaged.
2 Equipment specification
The devices in the SensorLine RM-DPC Micro FP series are differential pressure controllers designed for
use in robust, industrial environments. They are used for measuring, visualising and controlling non-
aggressive, gaseous media in the excess pressure and insufficient pressure ranges.
All necessary functions can be configured and displayed simply using a text display with two-key menu
control. In operating mode, the text display shows the differential pressure in variable physical sizes. The
status messages ON / SERVICE / ALARM are also indicated by LEDs.
In addition to the controller functions for differential pressure, the software can also be used to allocate a
two-position controller (∆pcontroller), a differential pressure monitor and a time function. The full scale
output for the measured differential pressure can be set by the parameter 12 "dP range". The anlog out-
put signal is automatically adjusted to the set full scale output.

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3 Assembly
4 Step-by-step installation

Connecting the supply voltage

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
More connections
Signal cables may not be run parallel to power cables.
Tighten all cable glands in use to ensure that the cables are properly enclosed and that protec-
tion rating IP-66 is guaranteed.
Cable glands that are not in use must be closed or replaced with blank plugs.

Connection for differential pressure measurement lines

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5 Step-by-step settings
5.1 Function in delivery status
The functions of a differential pressure dependent two-position controller and a differential pressure mon-
itor are active on delivery.
Two-position controller: If the increasing differential pressure exceeds the ∆pmax switch point (factory
setting: 900 Pa), relay contact 12, 13 closes and contact 11, 12 opens (see point on page 5). If the
decreasing differential pressure falls below the ∆pmin switch point (factory setting: 700 Pa), relay contact
12, 13 opens and contact 11, 12 closes.
Differential pressure monitoring: If the increasing differential pressure exceeds the ∆pmax alarm
switch point (factory setting: 1800 Pa), relay contact 18, 19 closes and contact 17, 18 opens (see point 
on page 5). If the differential pressure falls below the ∆pmax alarm switch point, relay contact 18, 19
opens and contact 17, 18 closes.
If another function is required or you want to activate additional functions, then you must change the pa-
rameter settings of the RM-DPC Micro FP. For more on this refer to points +"Configuration keys" on
page 7 and section 5.3 "Setting parameters".
5.2 Display and setting elements
"Alarm" LED
This LED flashes if one of the following alarms is triggered:
∆pmin alarm
Differential pressure has fallen below the set ∆pmin alarm switch point (in the case of the ∆p
control device function) or has exceeded it (in the case of the ∆pmonitor device function).
∆pmax alarm (the set ∆pmax alarm switch point has been exceeded)

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"Service" LED
This LED flashes if the set number of service hours has elapsed. This LED goes out when the
service hours counter is reset to 0 hrs. In order to do this, Parameter 10 "Maintenance
acknowledge ?" must be configured to "Yes".
"ON" LED
The "ON" LED is lit if supply voltage is present.
+
Configuration keys
Selecting a parameter:
Press and hold for more than 3 seconds. Then press
briefly to scroll up, or
to scroll down,
until you see the required parameter in the display.
Setting the parameter value:
Once you have selected a parameter, press
and hold for more than 3 seconds. Then press
briefly to scroll up, or
to scroll down,
until you see the required parameter in the display. Then press
and hold for more than 3 seconds to save the configured value.
Then, if necessary, press
briefly to scroll up, or
to scroll down,
and select additional parameters to configure or check.
Returning to "Operation" mode:
Press briefly.
The program automatically returns to "Operation" mode if no button is pressed in over
one minute.
Cancelling the parameter setting:
Press briefly. Then press
again briefly to return to "Operation" mode.

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5.3 Setting parameters
For more on this refer to points +"Configuration keys" on page 7

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5.4 Parameter list
Parameter
Text on the display Explanation Factory setting Setting range
01 01 Contr. type Device function dP-control.
dP-control,
dP-monitor
02 02 dP min ∆pmin switch point 700 Pa
150 Pa ...
(dP max - 50 Pa)
1
03 03 dP max ∆pmax switch point 900 Pa
200 Pa ...
(dP max alarm - 50 Pa)
2
04 04 dP min alarm ∆pmin alarm switch point 03
03, 100 Pa ...
(dP max alarm - 50 Pa)
2
05 05 dP max alarm ∆pmax alarm switch point 1800 Pa 03, 500 ... dP range4
06 06 Timer start Timer for relay output503 03... 240 h
07 07 Timer unit Time unit of the timer min s, min
08 08 Timer period Time period of the timer 10 s 03... 500 (s / min)6
09 09 Service hrs. Service hours alarm703 03, 500 hrs .... 25,000 hrs
10
10 Maintenance
acknowledge ?
Resets the service hours coun-
ter
No No, yes
11 11 dP source Internal / External sensor Internal Internal, external
12 12 dP range Full scale output
5000 Pa8
or 10000 Pa
9
1000 Pa ... 5000 Pa8
or 1000 Pa ... 10000 Pa
9
13 13 Current range 4-20 mA / 0-20 mA 4-20 mA 4-20 mA, 0-20 mA
14 14 dP attenuat. Alarm / Control delay 2 s 1 s ... 30 s
15 15 dP unit
Unit of the displayed
differential pressure
Pa
Pa, mbar, hPa,
inch H2O
16 16 Default set. Loads factory setting No No, yes
17 17 Language Display text language DE DE, EN, FR, ES
1Maximum value of the setting range = configured ∆p max switch point (see Parameter 03 "dP max") minus 50 Pa.
2Maximum value of the setting range = configured ∆p max switch point (see Parameter 05 "dP max alarm") minus 50 Pa.
30 = Function deactivated.
4Configured measuring range of the sensor (see Parameter 12 "dP range")
5See point on page 5
6Depends on the setting of Parameter 07 "Timer unit".
7The service hours counter runs when the differential pressure ∆pis greater than 200 Pa and the parameter 09 "Service hrs." has
not been configured to 0.
8Applies to the RM-DPC 5000 Micro FP – the full scale output can be configured in 500 Pa increments.
9Applies to the RM-DPC 10000 Micro FP – the full scale output is configurable in 500 Pa increments for the range
1000 Pa ... 5000 Pa, and continuously configurable for the range 5000 Pa ... 10000 Pa.

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6 Details on device function
6.1 Two-position controller (Parameters 01, 02, 03, 04, 05)
In order to implement a differential pressure dependent two-point controller with the switch points ∆p min
and ∆p max, Parameter 01 "Contr. type" must be configured to "dP control.". (For more on this refer to
points +"Configuration keys" on page 7 and section 5.3 "Setting parameters".)
If the increasing differential pressure exceeds the configured ∆pmax switch point (Parameter 03), relay
contact 12, 13 closes and contact 11, 12 opens (see diagram below). If the decreasing differential pres-
sure falls below the configured ∆pmin switch point (Parameter 02), relay contact 12, 13 opens and con-
tact 11, 12 closes.
It is also possible to configure a ∆pmax alarm switch point (Parameter 05) for rising differential pressure,
and a ∆pmin alarm switch point (Parameter 04) for falling differential pressure. If the differential pressure
exceeds the ∆pmax alarm switch point, relay contact 18, 19 closes and contact 17, 18 opens (see dia-
gram below). If the differential pressure falls below the ∆pmin alarm switch point, relay contact 15, 16
closes and contact 14, 15 opens.
The setting ∆pmin alarm switch point (Parameter 04) = 0 deactivates the differential pressure
monitoring function ∆pmin alarm.
The setting ∆pmax alarm switch point (Parameter 05) = 0 deactivates the differential pressure
monitoring function ∆pmax alarm.

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6.2 Differential pressure monitor (Parameters 01, 04, 05)
In order to implement a differential pressure monitor with the switch points ∆pmin alarm (for a ∆ppre-
alarm) and ∆p max alarm, Parameter 01 "Contr. type" must be configured to "dP monitor". (For more on
this refer to points +"Configuration keys" on page 7 and section 5.3 "Setting parameters".)
∆ppre-alarm:If the increasing differential pressure exceeds the configured ∆pmin alarm switch point
(Parameter 04), relay contact 15, 16 closes and contact 14, 15 opens (see diagram below). If the differ-
ential pressure falls below the ∆pmin alarm switch point, relay contact 15, 16 opens and contact 14, 15
closes.
∆pmax alarm: If the increasing differential pressure exceeds the configured ∆pmax alarm switch point
(Parameter 05), relay contact 18, 19 closes and contact 17, 18 opens (see diagram below). At the same
time, relay contact 15, 16 opens and contact 14, 15 closes. If the differential pressure falls below the
∆p max alarm switch point, relay contact 18, 19 opens and contact 17, 18 closes.
The setting ∆pmin alarm switch point (Parameter 04) = 0 deactivates the differential pressure
monitoring function ∆pmin alarm.
The setting ∆pmax alarm switch point (Parameter 05) = 0 deactivates the differential pressure
monitoring function ∆pmax alarm.

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6.3 Timer function (Parameters 06, 07, 08)
In addition to the differential pressure dependent two-position control, the timer function also makes it
possible to carry out time-controlled forced cleaning. The timer works independently of other device func-
tions.
After the time configured under "Timer start" (Parameter 06) elapses, relay contact 12, 13 closes and
contact 11, 12 opens (see point on page 5). After the time configured under "Timer period" (Parameter
08) elapses with the configured "Timer unit" (Parameter 07), relay contact 12, 13 opens and contact 11,
12 closes.
6.4 Self-monitoring
If all relay outputs are inactive (contacts 12, 13 / 15, 16 / 18, 19 are closed), then the RM-DPC Micro FP
differential pressure monitor is either
switched off or
defective.
7 Troubleshooting
Error
Possible causes
Recommended action
The "ON" LED is not lit.
No mains voltage
Check power feed
Device fuse is defective
Replace fuse
EMERGENCY STOP activated
Check EMERGENCY STOP
No differential pressure display
Differential pressure measure-
ment hoses are incorrectly at-
tached.
Reattach the hoses to the con-
necting piece of the
RM-DPC Micro FP.
Differential pressure display error
Hose connection error

Drain hoses. Clean joints be-
tween hose connections and
the filter casing with com-
pressed air (only towards the
filter, never towards the sen-
sor).
Fit the hoses so there are no
kinks.
Check the hose connections in
the device for water, kinks, etc.
"Alarm" LED flashing
∆palarm
Refer to the service instructions
of the filter.
"Service" LED flashing
The configured number of service
hours has elapsed.
Perform filter maintenance. Then
configure Parameter 10 to "Yes"
(acknowledge the service mes-
sage).

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8 Text messages on the display
8.1 Operating messages
Display
Explanation
Appears after the power is switched on and remains for approx. 1 se-
cond. The RM-DPC Micro FP can start up and perform a self-test during
this time.
RM-DPC Micro
Software #.##
Display on device function "dP control."
####
currently measured differential pressure
Contr. active
dP #### [Pa]
Display on device function "dP monitor"
####
currently measured differential pressure
Monitor active
dP #### [Pa]
8.2 Additional information
You can open the following additional information by pressing or in "Operation" mode, as
long as there are no active alarm messages.
Display
Explanation
Display of elapsed operating hours (#####) for 3 seconds.
After 3 seconds, the display returns to the operating messages.
Operating hrs
##### [h]
Number of hours to next maintenance (#####), if the service hours
counter has been activated.
After 3 seconds, the display returns to the operating messages.
Time to service
##### [h]
Number of minutes to timer function (####), if the timer has been acti-
vated.
Time to timer
#### [min]
8.3 Alarm messages
Display
Explanation
The ∆pmin alarm switch point has been exceeded.
####
currently measured differential pressure
dP min alarm
dP #### [Pa]
The ∆pmax alarm switch point has been exceeded.
####
currently measured differential pressure
dP max alarm
dP #### [Pa]
The ∆pmax alarm has priority over the ∆pmin alarm.
The ∆pmax alarm and the ∆pmin alarm messages are not saved. They are automatically de-
leted when the differential pressure falls below the relevant switch points.

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9 Glossary
Term
Explanation
Bulkhead connectors Connections for attaching the differential pressure measurement hoses.
Configuration Parameter settings
Differential pressure monitor Device function that monitors two configurable ∆pswitch points.
Differential pressure ∆pDifference between the pressure on the clean gas side and the pressure
on the crude gas side of the filter.
Forced cleaning Forced cleaning cycle, independant of the current status of the control
sequence.
Service hours The filter maintenance interval in hours configured under Parameter 09
"Service hrs."
Service hours counter Internal hour counter that must be reset to 0 hrs after each filter service
(see Parameter 10)
Time function Relay contact 11, 12, 13 switches after the configured time elapses for
the configured period of time.
Timer See time function
Two-key menu control The menu for parameter configuration can be operated with the two keys
and .
Two-position controller Controller with two switch points (here: ∆pmax and ∆pmin)
∆pcontroller Device function for implementing differential pressure dependent clean-
ing
∆pmax alarm switch point Differential pressure value, which when exceeded causes the message
"dP max alarm" to appear and relay contact 17, 18, 19 to switch.
∆pmax switch point
(also abbreviated as ∆p
max)
Upper switch point of the two-position controller, which when reached
causes relay contact 11, 12, 13 to switch thus starting differential pres-
sure dependent cleaning.
∆pmin alarm switch point In the case of device function ∆pcontroller:
Differential pressure value, which when decreasing (falling differential
pressure) causes the message "dP min alarm" to appear and relay con-
tact 14, 15, 16 to switch.
In the case of device function ∆pmonitor:
Differential pressure value, which when exceeded (rising differential
pressure) causes the message "dP min alarm" to appear and relay con-
tact 14, 15, 16 to switch.
∆pmin switch point
(also abbreviated as ∆pmin)
Lower switch point of the two-position controller, which when reached
causes relay contact 11, 12, 13 to switch thus stopping differential pres-
sure dependent cleaning.
∆premote display Display that shows the differential pressure of the filter in a switch room.

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10 Technical specifications
RM-DPC 5000 Micro FP
RM-DPC 10000 Micro FP
∆P measuring range
Full scale output configurable from
1000 Pa ... 5000 Pa
in 500 Pa increments
For the range 1000 Pa ... 5000 Pa
the full scale output is configurable
in 500 Pa increments
For the range 5000 Pa ... 10000 Pa
the full scale output is continuously
configurable.
Full scale output
(FSO)
5000 Pa
10000 Pa
Measuring sensor
Piezoresistive, overpressure-proof up to 138 kPa
Accuracy
(linearity and hysteresis)

± 1 % FSO
Supply voltage
24 V … 30 V DC
Power consumption
max. 5 W
Signal input
4-20 mA to connect an external differential pressure sensor
Signal outputs
Relay outputs (change-over contact), potential-free
max. contact load:
250 V AC, 10 A
50 V DC, 1,5 A / 30 V DC, 10 A (ohmic load)
Output 4-20 mA / 0-20 mA
4-20 mA corresponding to 0 ... x Pa*; resistance 600 Ohm
0-20 mA corresponding to 0 ... x Pa*; resistance

600 Ohm
Output 2-10 V / 0-10 V
2-10 V corresponding to 0 ... x Pa*
0-10 V corresponding to 0 ... x Pa*
Fuse
T 1 A, 250 V, 5 x 20 mm
Temperature range
- 20°C to + 60°C
Protection rating
IP-20
Dimensions
See section 3 "Assembly"
Weight
approx. 250 g
Installation height
max. 3000 m above M.S.L.
*set full scale output

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Disclaimer
The contents of this documentation has been verified for correctness and completeness. Nevertheless, errors can not be excluded
so that we cannot guarantee the correctness of this information. Subject to alterations at any time.