CRG2-**1.D - Pepperl+Fuchs
PROCESS AUTOMATION
MANUAL
Universal Transmitter
Power Supply
KF**-CRG2-(Ex)1.D
ISO9001
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
With regard to the supply of products, the current issue of the following document is applicable: The
General Terms of Delivery for Products and Services of the Electrical Industry, published by the
Central Association of the Electrical Industry (Zentralverband Elektrotechnik und Elektroindustrie
(ZVEI) e.V.) in its most recent version as well as the supplementary clause: "Expanded reservation
of proprietorship"
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Table of contents
Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1
2.2
Range of application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Model variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
4
Explosion protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5
Installation and connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.1
5.2
5.2.1
5.2.2
5.3
5.4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connection input (field circuit). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Connection output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Field device communication via HART. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Front side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6
Display modes and error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7
Editing device data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.2
7.3
7.3.1
7.3.2
7.3.3
7.3.4
Parameterization mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Invocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Navigation method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lowest menu level: select values, enter numeric values . . . . . . . . . . . . . . . . . . . . . . . . .
Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Zero point and Conversion factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Linerization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Smoothing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
12
13
14
15
16
17
18
18
22
22
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1
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Table of contents
Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trip and Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alarm freeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start value and End value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Default settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
24
26
26
26
28
29
31
31
32
33
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7.4
7.4.1
7.4.2
7.4.3
7.4.4
7.5
7.5.1
7.5.2
7.5.3
7.6
7.7
2
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Symbols used
1
Symbols used
This symbol warns of possible danger.
Failure to heed this warning may result in personal injury or death, or property damage,
including destruction.
Warning
This symbol warns the user of a possible fault.
Failure to heed this warning can lead to total failure of the device and any other
connected equipment.
Attention
This symbol draws attention to important information.
Note
2
Range of application
The K-System devices from Pepperl+Fuchs are used for transmitting signals between field devices and
a process control system/control system.
The devices marked with "Ex" in the type designation are suitable for the connection of field devices
used in potentially explosive atmospheres. Safe field circuits for these devices are intrinsically safe and
are galvanically isolated from non-intrinsically safe circuits. The devices thus establish an
electromagnetic separation between the potentially explosive atmospheres and the safe areas in a
system.
Devices without Ex-identification can be used to transmit signals between field devices and the process
control system/control unit.
Transmitters are measuring units that provide an output signal consisting of a unit current signal
(4 mA ... 20 mA). A transmitter power supply provides a transmitter with power and processes the
current signal.
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2.1
Overview
3
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Overview
The K-System Universal Transmitter PowerSupply KF**-CRG2-(Ex)1.D (CRG2 in short)
converts a fully parameterizable partition of
input signal in a proportional output current
(4 mA ... 20 mA).
This output signal will be transferred to
indicators or to analogue inputs on the process
control system/control system, for example.
Both relay outputs of CRG2 can monitor two
fully parameterizable trip values of the input
signal.
More information (for example, certificates and data sheets for the CRG2 and the operating manual for
the K-System) can be found on our webpage www.pepperl-fuchs.com (enter *CRG2* in the product
search).
2.2
Model variants
The following variants of the Universal Transmitter Power Supply are available:
D2 = with a 24 V DC supply (green identification on output side); for
power supply via Power Rail with collective error message; please
see data sheets and operating manual for the K-System. This
information can be found on our webpage www.pepperl-fuchs.com
(enter *CRG2* in the product search)
U8 = with an AC/DC wide range supply providing power supply at
20 V DC ... 90 V DC and 48 V AC ... 253 V AC without selection
and without notice of polarity (grey identification on output side)
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Ex = for connection of field devices in areas exposed to danger of
explosion
without identifier letters = for connection of field devices in the
safety area
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KF**-CRG2-**1.D
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Safety instructions
3
Safety instructions
The Universal Transmitter Power-Supply KF**-CRG2-(Ex)1.D may only be operated by
trained professionals in a manner corresponding to this operating manual.
Warning
Warning
The protection of operating personnel and of the system is only ensured if the devices
are used in accordance with their intended purpose. Any other type of operation than
that described in this manual places the safety and functionality of the devices and
systems connected to them in question.
The devices may only be installed, connected, and adjusted by electrical professionals
outside the hazardous area.
Warning
Warning
If faults cannot be eliminated, the devices must be taken out of operation and protected
from being placed in service again inadvertently. Devices must only be repaired directly
by the manufacturer Pepperl+Fuchs. Tampering with or making changes to the devices
is dangerous and therefore not permitted. They render the warranty void.
The responsibility for the adherence to local safety standards lies with the operator.
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Note
This text is adapted to the new edition of the Exprotection manual, if this is available
5
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Explosion protection
4
Explosion protection
For primary explosion protection, that is, for measures to be taken to
prevent or hinder the development of a dangerous explosive atmosphere,
please observe the guideline 94/9/EC or the corresponding national
guidelines.
For secondary explosion protection, that is, for measures to hinder the
ignition of a surrounding explosive atmosphere by electrical devices,
Pepperl+Fuchs will gladly make the "Explosion Protection Manual"
available to you for a nominal free.
Note in particular EN 60079-0, EN 60079-11, EN 60079-15 and
EN 60079-26, or the corresponding national guidelines.
Pepperl+Fuchs also offers a seminar on the topic of explosion protection.
5
Installation and connection
5.1
Installation
The Universal Transmitter Power-Supply KF**-CRG2-(Ex)1.D is constructed in
protection degree IP20 and must therefore be protected from undesirable ambient
conditions (water, small foreign objects).
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The devices of the K-system from Pepperl+Fuchs and thus also the Universal
Transmitter Power-Supply KF**-CRG2-(Ex)1.D can be mounted on a 35 mm
standard rail corresponding to DIN EN 50022. The devices must be snapped
onto the rail vertically, and never slanted or tipped to the side.
Additional possibilities for mounting, e. g. using the Power Rail, can be found
in the data sheets and in the K-System operating manual on our webpage
www.pepperl-fuchs.com (enter *CRG2* in the product search).
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Attention
6
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Installation and connection
Dimensions of the
KF**-CRG2-(Ex)1.D in mm
5.2
119 mm (4.7'')
58 mm (2.28'')
46 mm (1.82'')
115 mm (4.5'')
104 mm (4.1'')
40 mm (1.6")
Connection
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The removable terminals of the KF-series considerably simplify
the connection and the switch cabinet assembly. They make it
possible to replace devices quickly and without error if a
customer service becomes necessary.
Terminals are equipped with screws, are self-opening, have a
large connection area for a wire cross-section up to 2.5 mm² and
coded plugs, making it impossible to mix them up.
7
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Installation and connection
5.2.1 Connection input (field circuit)
The intrinsically safe field circuit is connected to the blue terminals 1 to 3 on the KF**-CRG2-Ex1.D.
This may be conducted using DIN EN 60079-14-compliant leads into the hazardous area.
The non-intrinsically safe field circuit is connected to the green terminals 1 to 3 on the KF**-CRG2-1.D.
In both cases you can connect the following field devices:
1. a 3-wire transmitter
2. a 2-wire transmitter with HART
3. an active current source
1.
3.
2.
KFD2-CRG2-Ex1.D
HART
1+
2mA
3
mA
ERR 24 V DC
Power Rail
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Zone 0, 1, 2
Div. 1, 2
8
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Installation and connection
5.2.2 Connection output
The control circuit and the power supply are connected to the green terminals 7 to 24 on the
KF**-CRG2-(Ex)1.D.
The terminals have the following functions:
• Terminals 7/8: current output (terminal 9 not used)
• Terminals 10 ... 12: relay 1
• Terminals 16 ... 18: relay 2
• Terminals 23/24: (terminal 22 not used)
 KFD2: 24 V DC power supply
 KFU8: AC/DC power supply
Terminals 4 ... 6, 13 ... 15 and 19 ... 21 do not exist on the CRG2.
KFD2-CRG2-Ex1.D
16
17
18
23
mA
ERR 24 V DC
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Power Rail
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KFU8-CRG2-Ex1.D
10
11
12
1+
I
+
10
11
12
I
II
III
II
16
17
18
78+
III
78+
23+
24-
24 V DC
mA
23
24
AC/DC
Zone 2
Div. 2
More information on connecting the CRG2 (e. g. using the Power Rail) can be found in the data sheets
and the K-System operating manual on our webpage www.pepperl-fuchs.com (enter *CRG2* in the
product search).
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Installation and connection
5.3
Field device communication via HART
In order to set the parameters of the connected HART field device, you will require a HART
communicator which you can connect to the field cables. Transmitting the HART signal via the current
output of the CRG2 is not possible.
When connecting the field cables, use an communicator for hazardous areas if the field
cables of CRG2 lead through a hazardous area.
Warning
5.4
Front side
1 2
3
4 5
6
KFD2-CRG2Ex1.D
PWR
ERR
1
2
OUT
ESC
RS232
OK
7 8 9
13 14 15
19 20 21
10 11 12
16 17 18
22 23 24
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The following indicating and operating elements are located on the front of
the CRG2:
• LED CHK (red) to indicate a device fault
• LED PWR (green) to indicate the presence of the supply voltage
• LED OUT 1 (yellow) to indicate that relay 1 is active
• LED OUT 2 (yellow) to indicate that relay 2 is active
• Display for indication of the measured values, fault messages and
parameterization modi
• Four keys for setting the parameters of the CRG2:
 (Up)
 (Down)
ESC (Escape)
OK
• Interface for connecting a computer for parameterization and
TM
diagnostics of the device with the PACTware operating software, using
the K-ADP-USB adapter
10
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Display modes and error messages
6
Display modes and error messages
In normal operation, the current measured value is indicated in the selected unit. For information on
selecting the unit, see section 7.2.
If the Alarm freeze (see section 7.4.3) is triggered but the device continues operating normally, a
corresponding message appears in the second line of the display.
If a fault occurs, one of the following messages is displayed until the fault is rectified (when
parameterized):
• Err Mem for device fault,
• Err LB for lead breakage,
• Err SC for short circuit
For the selection of error messages see section 7.3.1.
If switching the CRG2 on/off and checking the cables does not rectify the fault, please contact
Pepperl+Fuchs or the field device manufacturer.
The relays de-energizes when a fault occurs.
For information on the behaviour of the current output in the event of fault, see section 7.5.2.
The display of the device is updated at regular intervals. This can causes a short
flickering of the display. This flickering isn't a defect of the display.
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Note
11
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Parameterization mode
7
Editing device data
A change in device data will change the operation of the device!
Before entering new data into the device, you should ascertain that no danger to the
installation will result.
Warning
Note
7.1
In this manual, the parameterisation of the device via the control panel is described.
Parameterisation by means of a PC is more convenient.
The necessary K-ADP-USB can be ordered from Pepperl+Fuchs. The PACTwareTM
operating software and the manual are available on our Internet page www.pepperlfuchs.com under Software > PACTware.
Parameterization mode
7.1.1 Invocation
Main menu parameterization mode
Display mode
OK + ESC (simultaneously for 1 s) 
ESC
Unit (7.2)
Input (7.3)
Output (7.4 and 7.5)
12
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You can return to display mode from any point in the menu in parameterization mode by pressing the
ESC key (possibly multiple times). If you do not press any key for 10 minutes in parameterization mode,
the device automatically switches back into display mode.
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Service (7.6)
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Parameterization mode
7.1.2 Password
You can protect the parameterization from unauthorized changes by means of a password (see
section 7.6; at the delivery of the CRG2, the password is inactive).
If the password protection is active, you can view the different settings in the parameterization mode,
but not change them before entering the password. On the first attempt to make a change, the device
immediately prompts for a password.
The password must be entered for each transition from display mode to parameterization mode, once
each time.
The password cannot be changed. It is 1234.
The password is entered as follows:
automatic switch to password entry 
parameters still protected ESC
Change
attempt
value 0, flashing
,  *: 
parameters released OK, value 1234
ESC 
OK, wrong value 
new value, flashing
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* If you press the  or  key, the value changes step by step. If you hold the  or  key, the setting
"rolls" to higher or lower values.
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Parameterization mode
7.1.3 Navigation method
The following diagram shows the navigation method in parameterization mode using the , , OK and
ESC keys:
OK 
ESC
Min/Max


Trip
ESC

ESC

Hysteresis



ESC
Active

Alarm freeze


Delay
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ESC
OK 
ESC
Mode
ESC
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Rel1
14
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Parameterization mode
7.1.4 Lowest menu level: select values, enter numeric values
On the lowest level of the menu, you can either select one of several possible values, or enter a number
for the individual parameters.
Proceed as follows:
Lowest menu level
Parameter
OK 
ESC
Current value, flashing
, : 
ESC 
New value, flashing
OK 
ESC
New value, not flashing,
saved
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When entering numeric values, please note:
• If you press the  or  keys, the value changes step by step.
• If you hold the  or  keys, the value "rolls" to higher or lower values.
• The algebraic sign changes automatically.
• The decimal point is moved automatically.
15
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Unit
7.2
Unit
The following diagram shows the unit menu. Items from the lowest menu level are outlined in bold.
The CRG2 measures in mA. Using the parameters zero point and conversion factor (section 7.3.2) it
converts the measured value into the selected units. These units are used for the display of the
measured values and for all corresponding settings in the parameterization mode.
——
°F
Continued from the left
°C
m
bar
m³/h
Pa
l/h
N
l/min
t
m³
kg
l
km/h
%
m/s
mA
Continued right
16
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Unit
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Input
7.3
Input
The following diagram shows the input parameters menu. Items from the lowest menu level are outlined
in bold.
The menu items Zero point and Conversion factor will not be shown if the unit mA is selected
(section 7.2).
Input
——
Line monitor (7.3.1)
——
LB
——
LB On
LB Off
SC
——
SC On
SC Off
Zero point (7.3.2)
——
-15 mA ... 15 mA
Conversion factor (7.3.2)
——
0.100 ... 5000
Linearization (7.3.3)
——
Linearization On
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Linearization Off
Smoothing (7.3.4)
——
0 s ... 255 s
17
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Input
7.3.1 Line monitor
• If you select On for LB, an input current < 0.2 mA will be registered as a lead break (section 6).
• If you select On for SC, an input current > 22 mA will be registered as a short circuit (section 6).
If you wish to process the  0.2 mA input values as measured values, you must deselect the lead
breakage detection (Off LB). If not, an error will be signalled within the measuring range.
7.3.2 Zero point and Conversion factor
The device measures in mA. If you have selected different units (section 7.2), the device calculates the
measured value in the selected units using the parameters Zero point and Conversion factor.
The parameters for your application must be determined according to the following formula:
Measured value in = (Original measured value [mA] – Zero point) x Conversion factor
the selected units
An arbitrary value between -15 mA and +15 mA can be set as the Zero point, and values between
0.100 and 5000 as the Conversion factor.
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The following includes examples where the formulas are applied.
18
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Input
Example 1: selected unit °C, 0 °C ... 200 °C is to correspond to 4 mA ... 20 mA
y [°C]
200
150
100
50
-4 -3 -2 -1
-50
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
x [mA]
-100
-150
-200
•
•
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•
Linearization
y=mx+n
Conversion factor = rise in the graph
m = (y2 – y1) / (x2 – x1)
m = (200 – 0) / (20 – 4) = 12.5
Zero point = intersection point with the x-axis on the graph, providing that the physical measuring
range starts from 0 (y = 0 °C). The zero point corresponds to the lower measuring range limit
(x = 4 mA) from which the measuring range starts.
The zero point can be calculated as follows:
n=y–mx
n = 200 – 12.5 x 20 = -50
y=mx+n
x = (y – n) / m
x = (0 + 50) / 12.5 = 4
19
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Input
Example 2: selected unit °C, 0 °C ... -100 °C is to correspond to 20 mA ... 0 mA
y [°C]
200
150
100
50
1
2
3
4
5
6
7
-4 -3 -2 -1
-50
8
9 10 11 12 13 14 15 16 17 18 19 20
x [mA]
-100
-150
-200
•
The zero point can be calculated as follows:
n=y–mx
n = -100 – 5 x 0 = -100
y=mx+n
x = (y – n) / m
x = (0 + 100) / 5 = 20
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•
Linearization
y=mx+n
Conversion factor = rise in the graph
m = (y2 – y1) / (x2 – x1)
m = (100 – 0) / (20 – 0) = 5
Zero point = intersection point with the x-axis on the graph, with the condition that the physical
measuring range starts from 0 (y = 0 °C). The zero point corresponds to the upper measuring range
limit (x = 20 mA) at which the measuring range ends.
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Input
Example 3: selected unit bar, -4 bar ... 4 bar is to correspond to 4 mA ... 20 mA
y [bar]
4
3
2
1
-4 -3 -2 -1
-1
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
x [mA]
-2
-3
-4
•
•
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•
Linearization
y=mx+n
Conversion factor = rise in the graph
m = (y2 – y1) / (x2 – x1)
m = (4 - 0) / (20 – 12) = 0.5
Zero point = intersection point with the x-axis on the graph (bar value at y = 0)
n=y–mx
n = 4 – 0.5 x 20 = -6
y=mx+n
x = (y – n) / m
x = (0 + 6) / 0.5 = 1
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Input
7.3.3 Linerization
Using the parameterization software PACTwareTM a linearization table can be saved in the CRG2; for
details of this function see On-line help. Via the operator panel you can merely switch the use of the
table for the calculation of the output value on and off (On/Off).
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7.3.4 Smoothing
For extremely variable measurement values, you can use Smoothing to influence how quickly an output
reacts to a change in input value: 0 s = no smoothing, 255 s = maximum smoothing.
22
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Relays
7.4
Relays
The following diagram shows the relay outputs menu. Items from the lowest menu level are outlined in
bold.
From the Rel1 and Rel2 menu options, you can use the OK key to get to a menu in which you can enter
individual parameters for the selected relay. Both menus are structured in the same way and are thus
only described once. Information about current output see section 7.5.
Output
——
Rel1
——
Min/Max (7.4.1)
——
Rel2
Max
Min
Iout
Trip
——
7.4.2
Hysteresis
——
7.4.2
Mode (7.4.1)
——
Active
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Passive
Continued on next page
23
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Relays
Alarm freeze (7.4.3)
——
On
Off
Delay (7.4.4)
——
0 s ... 250 s
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7.4.1 Operating behaviour
The switching direction can be set as Max or Min and the direction of action as Active or Passive
(section 7.4).
Application ranges:
• Switching direction Max, mode of operation Active:
alarm on trip value overrange, e. g. audible alarm on
• Switching direction Max, mode of operation Passive:
switch off on trip value overrange, e. g. pump, heating, ... off;
with large hysteresis Min/Max operation (pump, heating, ... on/off)
• Switching direction Min, mode of operation Active:
alarm on trip value underrange, e. g. audible alarm on
• Switching direction Min, mode of operation Passive:
switch off on trip value underrange, e. g. pump, heating, ... off;
with large hysteresis Min/Max operation (pump, heating, ... off/on)
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Relays
The exact operating behaviour of the CRG2 is shown in the following diagram:
Value
Max
Max – hysteresis
Min + hysteresis
Min
Time
Switching direction Max, mode of operation Active:
energized
de-energized
Switching direction Max, mode of operation Passive:
energized
de-energized
Switching direction Min, mode of operation Active:
energized
de-energized
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Switching direction Min, mode of operation Passive:
energized
de-energized
25
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Relays
7.4.2 Trip and Hysteresis
When entering the values for Trip and Hysteresis please note:
• Both values are to be entered in the units, which were selected under Units (section 7.2).
• You can enter values
 between 0 mA and 24 mA and
 between the converted values of these limits in the selected units; for conversion using the
parameters Zero point and Conversion factor see section 7.3.2
• The hysteresis must be selected as > 1 % of the trip point to prevent the relay from vibrating.
• As the representation of the operating behaviour in section 7.4.1 shows, the following must apply:
 for the switching direction Max: Trip point - Hysteresis  0
 for the switching direction Min: Trip point + Hysteresis  upper limit trip point
These input limits are automatically preset by the CRG2.
7.4.3 Alarm freeze
The Alarm freeze helps you to avoid that short-term trip value overranges are not noticed by the
operating staff.
If Alarm freeze On has been selected, the new state is maintained after the relay switching until the ESC
key is pressed or the device is restarted. These actions reset the relay, except for a limit violation.
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7.4.4 Delay
If you set a time > 0 sec, you prevent short-time violations of the trip value from triggering an alarm.
• The relay only switches if the trip point is exceeded/fallen short of for a period that is longer than the
delay time.
• The relay only switches back if the trip point -/+ hysteresis is fallen short of/exceeded for a period
that is longer than the delay time.
• If the trip point is exceeded/fallen short of for a short time, this does not have any effects.
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Relays
The following diagram shows the operating behaviour for the trip mode Max, operating mode Active.
Value
Trip point Max
Max – hysteresis
Time
Switching direction Max, mode of operation Active, with delay
energized
de-energized
Delay
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Delay
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Current output
7.5
Current output
The following illustrations show the current output menus. Items from the lowest menu level are outlined
in bold. Information about relay outputs see section 7.4.
Output
——
Rel1
Rel2
Iout
—— Characteristics (7.5.1)
——
0 mA ... 20 mA
4 mA ... 20 mA
NE43
4 mA ... 20 mA
Fault current (7.5.2)
——
Up/Down
Hold
Max
Continued on next page
28
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Min
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Current output
Start value
——
7.5.3
End value
——
7.5.3
Inverted (7.5.1)
——
Inverted
Normal
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7.5.1 Characteristic
With the parameters Start value and End value establish a sub-range of the input signal as the
measuring range of the application (section 7.5.3). This measuring range is formed linearly on the
output signal.
The following table shows, for the various characteristics (section 7.5), the conversion of the Start value
and End value and the behaviour during measuring overrange.
• The statements apply for the setting Inverted  Normal.
• If you select Inverted  Inverted, the conversion of Start value and End value are reversed. The
start value is thus converted to 20 mA and the end value to 0 mA or 4 mA.
• Measuring overrange, which extend over the described linear range, cannot be evaluated. In the
case of such overrange, the specified value is constantly output.
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Current output
Characteristic
Start value
converted into
End value
converted into
Linear
Linear overrange
underrange up to up to
0 mA ... 20 mA
0 mA
20 mA
0 mA
4 mA ... 20 mA
NE43
4 mA
20 mA
3.8 mA
20.5 mA
20.5 mA
4 mA ... 20 mA
4 mA
20 mA
0 mA
approx. 22 mA
Example of a diagram of a mA measurement range on the output signal
Characteristic 4 mA ... 20 mA NE43, start value 2 mA, end value 10 mA
mA
20.5
20.0
4.0
3.8
0
-1.9
2
Start value
10 10.25
End value
mA
Measuring
range
Example diagram displaying the input signal in °C to the output signal
Characteristic 4 mA ... 20 mA NE43, start value 0 °C, end value 200 °C (see example 1 in section 7.3.2)
-2
30
0
Start value
200 205
End value
°C
Measuring
range
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20.5
20.0
Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Current output
7.5.2 Fault current
The following table shows the current output in the event of a fault, depending on the characteristic.
Setting
Up/Down
0 mA ... 20 mA
4 mA ... 20 mA NE43
4 mA ... 20 mA
21.5 mA
21.5 mA
22 mA
with short-circuit
with short-circuit
with short-circuit
(not distinguishable from
End value overrange)
0 mA
2.0 mA
0 mA
with lead breakage
with lead breakage
with lead breakage
(not distinguishable from
Start value measurement)
Hold
Max
(not distinguishable from
Start value underrange)
Last measured value before the fault
21.5 mA
21.5 mA
22 mA
(not distinguishable from
End value overrange)
Min
0 mA
2.0 mA
0 mA
(not distinguishable from
Start value underrange)
7.5.3 Start value and End value
Please note when entering Start value and End value:
• Both values are to be entered in the units, which were selected under Units (section 7.2).
• Values between 0 mA and 20 mA can be entered, or between the values of these limits converted
into the selected units, using the parameters Zero point and Conversion factor see section 7.3.2
The difference between End value and Start value must be at least 1 % of the End value (preset
automatically by the CRG2).
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(not distinguishable from
Start value measurement)
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Service
7.6
Service
The following diagram shows the service parameter menus. Items from the lowest menu level are outlined in bold.
Service
——
Password (7.1.2)
——
On
Off
Language
——
DE (German)
ENG (English)
Reset (see below)
——
On
Of
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Reset: Pressing the OK key when On Reset is flashing resets all settings on the CRG2 to default (see
section 7.7). Any entries that you have made in parameterization mode are lost.
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Default settings
7.7
Default settings
Menu
Parameter
Default setting
Main menu
Unit
mA
Input
Output Rel1
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Output Rel2
Output Iout
Line monitor
On LB/On SC
Zero point
4.000 mA
Conversion factor
0.100
Linearization
Off
Smoothing
3s
Min/Max (= switching direction)
Min
Trip
16.00 mA
Hysteresis
2.000 mA
Mode
Passive
Alarm freeze
Off
Delay
0s
Min/Max (= switching direction)
Min
Trip
2.000 mA
Hysteresis
2.000 mA
Mode
Active
Alarm freeze
Off
Delay
0s
Characteristics
4 mA ... 20 mA NE43
Separate value
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
Editing device data: Default settings
Menu
Default setting
Fault current
Min
Start value
0.000 mA
End value
20.00 mA
Inverted
Normal
Password
Off
Language
ENG
Separate value
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Service
Parameter
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Universal Transmitter Power Supply KF**-CRG2-(Ex)1.D
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Notes
35
PROCESS AUTOMATION –
PROTECTING YOUR PROCESS
Worldwide Headquarters
Pepperl+Fuchs GmbH
68307 Mannheim · Germany
Tel. +49 621 776-0
E-Mail: info@de.pepperl-fuchs.com
For the Pepperl+Fuchs representative
closest to you check www.pepperl-fuchs.com/contact
www.pepperl-fuchs.com
Subject to modifications
Copyright PEPPERL+FUCHS · Printed in Germany
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07/2015
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