Braun D521 series User manual

E16
D521-Manual_EN_Rev07 2017_05_26 Page 1 of 31
Manual
Series D521
(Revision 07)
Product Manual
Original Instructions
valid for versions
D521.02 2 Relay Outputs as SPDT relays
D521.04 4 Relay Outputs (2 as SPDT relays, 2 as PhotoMOS relays)
D521.10 1 Analog Output
D521.12 2 Relay Outputs as SPDT relays + 1 Analog Output
D521.14 4 Relay Outputs (2 as SPDT relays, 2 as PhotoMOS relays) + 1 Analog Output
D521 Front View
Single Channel Speed Monitor
for
increased safety requirements up to SIL1

D521-Manual_EN_Rev07 2017_05_26 Page 2 of 31
Table of Contents
Content Page
Table of Contents........................................................................................................................................................2
1Technical Specifications....................................................................................................................................3
2Description .........................................................................................................................................................4
2.1 Function ......................................................................................................................................................4
2.2 Display and Operating Elements.................................................................................................................4
2.3 Display ........................................................................................................................................................4
2.4 Status LEDs.................................................................................................................................................4
2.5 Functions during normal operation..............................................................................................................4
2.6 Event Codes on Display..............................................................................................................................4
2.7 Measuring Principle.....................................................................................................................................5
2.8 Performance at Signal Break.......................................................................................................................5
2.9Signal Input V-Path (volts) Terminal 14........................................................................................................5
2.10 Signal Input mV-Path (millivolts) Terminal 15 ..............................................................................................5
2.11 Sensor monitoring.......................................................................................................................................5
2.12 Reserved.....................................................................................................................................................5
2.13 Alarms.........................................................................................................................................................6
2.14 Analog Output (D521.10, D521.12, D521.14)..............................................................................................6
2.15 Signal Pulse Output 1..................................................................................................................................6
2.16 Signal Pulse Output 2..................................................................................................................................6
3Model No. Code..................................................................................................................................................7
4Parameters .........................................................................................................................................................8
4.1 Summary of parameters and their default values as set on delivery...........................................................8
4.2 Setting the Parameters via RS232-Interface...............................................................................................9
4.3 Setting the parameters via Front Keyboard...............................................................................................10
5Description of Parameters and their Settings ...............................................................................................11
5.1 Default Values at delivery..........................................................................................................................21
6Installation........................................................................................................................................................22
7Safety Notes for Installation and Operation...................................................................................................23
7.1 Safety Notes for Installation.......................................................................................................................23
7.1.1 General Instructions..........................................................................................................................23
7.1.2 EMI...................................................................................................................................................23
7.1.3 Safety Notes for Operation...............................................................................................................23
7.2 Safety Notes for SIL2 Speed applications in hazardous areas..................................................................24
7.2.1 Monitoring the Speed Signal.............................................................................................................24
7.2.2 Use of alarms SP1 to SP4................................................................................................................24
7.2.3 Monitoring the Speed during operation.............................................................................................24
7.2.4 Safety Notes for Standstill alarm SP3...............................................................................................24
7.3 Dimensions................................................................................................................................................25
7.4 Function diagram and connections of D521..............................................................................................26
7.5 Connections of measuring signals to input................................................................................................27
7.6 Connection of BRAUN sensors.................................................................................................................28
7.7 Connection of A5S1.. with D461 to D521 ..................................................................................................29
8Safety Data........................................................................................................................................................30
8.1 Safety Data of Measuring Chain D521-A5S0 resp. D521-D461-A5S1......................................................30
9Revision notes..................................................................................................................................................31

D521-Manual_EN_Rev07 2017_05_26 Page 3 of 31
1 Technical Specifications
Design Snap-on-track plastic enclosure for 35 mm rail,
field mounting enclosure (Option -G) on request.
Dimensions: see chapter 7.3
Weight: standard version approx. 0.3 kg, option –G approx. 1.0 kg
Installation Conditions Ambient temperature in operation: 0°C...+60°C
Ambient temperature in storage: -40°C...+85°C
Electrical insulation grade: I
Voltage grade: I
Protection grade standard version: terminals IP20
enclosure IP 40
Protection grade option -G: IP65
Power Supply Supply voltage: 20...265 volts uc
Power consumption: 5 W resp. 5 VA
Signal input and Response levels: see chapter 2.9 resp. 2.10
Sensor supply Input impedance (I): 100 kohms
Sensor supply: approx. 13 volts, max. 60 mamps resp.
8 volts with 1k load resistor (incorporated)
Sequence: 5 msec - 9.999 sec (programmable)
Measurement Accuracy: ± 0.005 % of measurement, ± 1 in LSD
Relay Outputs 2 alarm outputs with SPDT relay contacts
(Versions D521.02 Handling capacity: Voltage max 250 voltsAC/DC (minimum 10 millivolts)
D521.04 Current max 2 amp AC, 1 amp DC (minimum 10 µamp)
D521.12 Power rating max 100 W, 250 VA into ohmic load only
D521.14) (inductive loads need overload protection)
(Versions D521.04 2 additional alarm outputs with PhotoMOS relay contacts
D521.14) Handling capacity: Voltage max 60 volts DC (minimum 10 millivolts)
Current max 0.1 amp DC (minimum 10 µamp)
Analog Output Isolated and programmable with range 0/2-10volts / 0/4-20mamp
(Versions D521.10 Resolution: 12 bit
D521.12 Max. load: 750 ohms
D521.14) Linearity error: < 0.1 %
Temperature stability: ±0,02 %/°C within a range of 0...60°C.
Display 5 digits LED red, 10 mm, with adjustable decimal point
Programming Interface RS 232 (only with adapter cable L3D01 and interface software IS-RS232-S)

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2 Description
2.1 Function
The device measures the speed of rotating equipment such as turbines, compressors or ex-
panders and monitors it versus setpoints and converts it into an analog output.
Parameters may be set via front keyboard and display or via the RS-232 data interface.
2.2 Display and Operating Elements
2.3 Display
During normal operation, the speed will be displayed.
2.4 Status LEDs
LEDs 1 to 4 are on if the corresponding output relays of SP1 to SP4 are energized.
2.5 Functions during normal operation
Key : Reset of latched max./min. -values speed
Key : Display of latched max. speed
Key : Display of latched min. speed
Keys and : Reset of latched alarms
2.6 Event Codes on Display
-E1-: Wrong code figure in step P00.00
SE-01 : Sensor fault or signal lead break
Display
Data-Interface
LEDs
1 to 4
Operation
Keys
1
RS232
D521
2
3
4
26
25
24
23
22
21
20
19
18
17
16
15
14
1
2
3
4
5
6
7
8
9
10
11
12
13
P
E

D521-Manual_EN_Rev07 2017_05_26 Page 5 of 31
2.7 Measuring Principle
Measurement is based on the frequency of the pulse sequence representing the speed. Basic
quantity is the time between one or more of its pulses. An automatic function determines this
number, in order to maintain a minimum period of time for every measurement to be extended
over. This time minimum is programmable to 5 milliseconds or more, thus establishing a corres-
ponding averaging and stabilization of measurements.
The corresponding speed value in terms of RPM, by which the display, the alarm circuit, and the
analog output are reading, computes from these measurements. This process further considers
the programmed application data (relation between machine speed and signal frequency).
2.8 Performance at Signal Break
In normal operation, the function closely tracks the input sequence, with the programmed
performance. After a sudden interrupt of the input pulses, the unit reduces the readings following
an automatic step-down sequence. This starts as fast as the most recent measuring sequence
before interrupt but then decreases slower and slower (reciprocal) until it meets the programmed
low end.
2.9 Signal Input V-Path (volts) Terminal 14
Accepting any sensor which meets these conditions:
- High Level path:
Response level on/off : >7/<5 volts DC with programmable hysteresis
Maximum voltage: 100 volts
Input impedance: 100 kOhm
Frequency range: 0 … 50 kHz
Sensor supply: approx. 13 volts / 60 mamps.
- 2-leads NAMUR sensors DIN 19234 (if programmed):
Current level on/off >2.0 mamps / < 1,2 mamps with programmable hysteresis
Sensor supply: 8 volts with 1 kOhm load resistor (incorporated).
Corresponding BRAUN Sensors listed in Wiring Diagrams on page 26.
2.10 Signal Input mV-Path (millivolts) Terminal 15
Accepting low level sensors or such with superposed DC-level, or such missing the above
specified V-levels. Sensitivity (min amplitude required) depending on signal frequency (with
sinusoidal waveform)
500 millivolts RMS between 0.1 Hz …1 Hz
50 millivolts RMS between 1 Hz …10 kHz
500 millivolts RMS above 10 kHz
Max voltage 50 volts with max ± 35 volts DC superposed.
Input impedance approx. 50 kOhm
2.11 Sensor monitoring
Monitoring sensor current drain, output voltage, and signal activity (if applicable to sensor type).
2.12 Reserved

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2.13 Alarms
Two (optionally four) individual setpoints control an own signal output (2 as SPDT relays
contacts, 2 as option with PhotoMOS relay contacts). Each with individually programmable
response characteristics, and each with programmable starter.
2.14 Analog Output (D521.10, D521.12, D521.14)
Output signal isolated and linear as current 0/4… 20 mamps into 750 Ohms max load, or volt-
age 0/2 volts …10 volts under max. 10 mamps load.
Live zero as well as high and low end of conversion programmable.
2.15 Signal Pulse Output 1
Repeating the input pulse signals (undivided) by the same sequence, as square wave pulses of
approx. 10 volts and 1 kOhm source impedance. Same reference as input.
2.16 Signal Pulse Output 2
Isolated (passive) output by optocoupler, for max load 30 volt / 10 mamps. Pulse sequence as
reduced by the input pulse divider. Max output frequency 12 kHz (at a 1:1 duty input signal).
Output must be powered externally.

D521-Manual_EN_Rev07 2017_05_26 Page 7 of 31
3 Model No. Code
No.
Analog Output
No. of Alarms
D521.02
no
2 (2 SPDT relay outputs)
D521.04
no
4 (2 SPDT relay outputs + 2 PhotoMOS relay outputs)
D521.10
yes
0 none
D521.12
yes
2 (2 SPDT relay outputs)
D521.14
yes
4 (2 SPDT relay outputs + 2 PhotoMOS relay outputs)

D521-Manual_EN_Rev07 2017_05_26 Page 8 of 31
4 Parameters
4.1 Summary of parameters and their default values as set on delivery
Param.
No.
Default
value
Parameter Function
P00.xx
Code figure, Parameter Lock, Front side Reset of Alarms
P00.00
0000
Code figure
.01
0000
New code figure
.02
0
Front side Parameter Lock : 0: locked / 1: enabled
.03
0000
Minimum Measuring Period (in xxxx milliseconds)
.04
000
Starter Time Period (in xxx sec)
P01.xx
Input Scaling
P01.00
0
Decimals of input frequency
.01
00100
Value of nominal input frequency in Hz
.02
0
Decimals of speed value
.03
00100
Nominal speed (e.g. in RPM)
.04
00001
Lower limit of the speed range
.05
0
Hysteresis of input response level (0 :A5S sensor, 1 : MPU or NAMUR sensor)
.06
1
Reserved for future applications
.07
0
Reserved for future applications
.08
1
Sensor monitoring: 0: off / 1: on / 2: on, latched
.09
1
Mode of sensor monitoring: 0: none / 1: current / 2: voltage / 3: both / 4 : inductive / 5 : NAMUR
.10
001
Fix value 001
P02.xx
Display
P02.00
0
LSDs on zero
.01
0.3
Updating sequence (in x.x seconds)
P03.xx
Analog Output
P03.00
10000
High-end speed value
.01
00000
Low-end speed value
.02
1
Zero level: 0 : dead zero / 1 : live zero
.03
1
Output mode: 0 : signal voltage / 1 : current
.04
0
Output level at sensor fault: 0: no change / 1: min / 2: max
.05
0
Output direction: 0/4..20 mamps (0/2..10 volts) / 1 : 20...4/0 mamps (10..0/2 volts)
P04.xx
Alarm SP1
P04.00
01100
Setpoint (by same terms as programmed in P01.03)
.01
05.0
Hysteresis bandwidth for SP: 00.1….99.9 % of setpoint
.02
1
Hysteresis location: 0 : above / 1 : below
.03
0
Relay state at ' n > SP ': see table of parameter description
.04
0
Starter function effective for setpoint SP1: 0 : no / 1 : yes
.05
0
Alarm state during starter phase: 0 : ' n < SP ' / 1 : ' n > SP '
.06
0
Alarm state at sensor fault: 0 : acc. to variable / 1 : ' n < SP ' / 2 : ' n > SP '
Continued on next page

D521-Manual_EN_Rev07 2017_05_26 Page 9 of 31
Param.
No.
Default
value
Parameter Function
P05.xx
Alarm SP2
P05.00
01200
Setpoint (by same terms as programmed in P01.03)
.01
05.0
Hysteresis bandwidth for SP: 00.1….99.9 % of setpoint
.02
1
Hysteresis location: 0 : above / 1 : below
.03
0
Relay state at ' n > SP ': see table of parameter description
.04
0
Starter function effective for setpoint SP2: 0 : no / 1 : yes
.05
0
Alarm state during starter phase: 0 : ' n < SP ' / 1 : ' n > SP '
.06
0
Alarm state at sensor fault: 0 : acc. to variable / 1 : ' n < SP ' / 2 : ' n > SP '
P06.xx
Alarm SP3
P06.00
01300
Setpoint (by same terms as programmed in P01.03)
.01
05.0
Hysteresis bandwidth for SP: 00.1….99.9 % of setpoint
.02
1
Hysteresis location: 0 : above / 1 : below
.03
0
Relay state at ' n > SP ': see table of parameter description
.04
0
Starter function effective for setpoint SP3: 0 : no / 1 : yes
.05
0
Alarm state during starter phase: 0 : ' n < SP ' / 1 : ' n > SP '
.06
0
Alarm state at sensor fault: 0 : acc. to variable / 1 : ' n < SP ' / 2 : ' n > SP '
P07.xx
Alarm SP4
P07.00
01400
Setpoint (by same terms as programmed in P01.03)
.01
05.0
Hysteresis bandwidth for SP: 00.1….99.9 % of setpoint
.02
1
Hysteresis location: 0 : above / 1 : below
.03
0
Relay state at ' n > SP ': see table of parameter description
.04
0
Starter function effective for alarm SP4: 0 : no / 1 : yes
.05
0
Alarm state during starter phase: 0 : ' n < SP ' / 1 : ' n > SP '
.06
0
Alarm state at sensor fault: 0 : acc. to variable / 1 : ' n < SP ' / 2 : ' n > SP '
P08.xx
Data interface
P08.00
3
Baudrate: 0 : 300 / 1 : 1200 / 2 : 9600 / 3 : 19200 / 4 : 38400
.01
001
Device no.: 001 …125
4.2 Setting the Parameters via RS232-Interface
Only possible for OEM with special interface software IS-RS232-S and adapter cable L3D01
from BRAUN.
PC must have a 9pole SUB-D RS232 Interface.

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4.3 Setting the parameters via Front Keyboard
Principle:
Select a parameter via its ‚name’ Pgg.ss,
in that gg : Parameter-group number and
ss : Step-number within the group,
then display the value and alter if required.
Procedure:
Initiate programming phase by pressing keys and together;
instead of the normal display P00.00. appears
Select the group or step number with keys , .
Switch between Groups and Step Fields with the . key
Current value of the Parameters is displayed with key .
Select active position with the . key
Adjust the number in the active field with keys , .
Acknowledge and set with key , Discard (original value remains) with key .
Return to operational mode with the key.
See example below: Change parameter P01.01 from 2386 to 2387 or 2385.
Move
active
digit with
Normal Display while Programming
Display active digit(s) blinking (shown underlined here)
Select Select Change
Toggle Group Toggle Step-No. Toggle Parameter Value
with with with
key(s) Key Key
+
P
P
E
E
E
: Enter
or
: Cancel
P
Enter : new, changed value is valid
Cancel : original value still valid
P
P

D521-Manual_EN_Rev07 2017_05_26 Page 11 of 31
5 Description of Parameters and their Settings
Parameter Group P00.xx
Code Figure, Parameter Lock, Front side Reset of Alarms
Parameter No.
Meaning of Parameter
Setting Range of Parameter
Description of Parameters and their Settings
P00.00
Code Figure
Range: 0000 .. 9999
If the parameters are locked (see P00.02), the code figure must be entered
prior to any change of other parameters.
If the code figure is not correct, -E 1- is displayed.
Without code figure and P00.02: 0 the values of all parameters may be in-
spected, but not changed.
P00.01
New Code Figure
Range: 0000 .. 9999
A new code figure may be set in P00.01. Then it replaces the previous one.
P00.02
Front side Parameter Lock
Range: 0 .. 1
Setting:
0 : Parameters are locked, front side change only possible with code
figure
1 : Parameters unlocked, front side change of parameter values possible
P00.03
Minimum Measuring Period
in milliseconds
Range: 0005 .. 9999
(5 .. 9999 milliseconds)
The measurement is based on a time interval measurement over a (variable)
number of input signal pulses. A programmable minimum measuring period
thus will be maintained, automatically including more input pulses into every
measurement with increasing input frequency. This establishes an averaging
over the programmed period of time, which helps to stabilize the measure-
ments, specifically with fluctuating variables. As a standard, a minimum time
of 300 milliseconds is recommended. A shorter period should be selected to
trace a fast variation (by the analog signal or alarm). A longer period however
may be selected to stabilize the measurement against a fluctuating process
variable.
The setting of P00.03 defines the minimum measuring period of time, in
terms of milliseconds, within a range of 0005....9999 milliseconds. A setting
less than 0005 is possible, but minimum measuring time will still be 5 msec.
P00.04
Starter Time Period
Range: 000 .. 999 [sec]
This step sets the starter time period (duration). The starter phase state lasts
from the beginning of the external starter signal plus the programmed time
elapse following its end. Valid for all setpoints with the activated starter.

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Parameter Group P01.xx
Measurement Configuration, Sensor Monitoring
Parameter No.
Meaning of Parameter
Setting Range of Parameter
Description of Parameters and their Settings
P01.00 to P01.03:
Scaling
Scaling defines the relation between the input signal frequency (in terms of
Hz), and the corresponding display (e.g. in RPM and decimal position
required by the application). Both values are freely programmable by their
decimals and numerical amount. Of course, they must refer to the same
operation level. This reference point is recommended close to the high end of
the intended operation range. In later operation, however, it may be overrun
without error.
Example:
A rotating shaft to be measured carries 36 slots. At a shaft speed of 1500
RPM, this produces a signal frequency of 1500 × 36 pulses per minute =
54,000 pulses per minute = 54,000 ÷ 60 Hz = 900 Hz. (Presuming the predi-
vider is set to 001).
Therefore, 900 (Hz) and 1500 (RPM) are the data-set to be programmed in
the corresponding program steps:
Step P01.00 : parameter = 0 (= no decimal)
P01.01 : parameter = 00900
P01.02 : parameter = 0 (= no decimals)
P01.03 : parameter = 01500
Number of slots
Possible pair of values
Nominal Frequency (Hz)
Nominal Speed (RPM)
30
1750
3500
36
2100
3500
60
6000
6000
72
7200
6000
P01.00
Number of decimals for P01.01
Range: 0 .. 4
P01.01
Input frequency in Hz
Range: 00001 . .99999
P01.02
Number of decimals for P01.03
Range: 0 .. 4
P01.03
Speed (RPM)
Range: 00001 .. 99999
P01.04
Low end of operating range
Range: 00000 .. 99999
If the speed value falls lower than this level, the measurement will be
canceled to zero. This also applies to the analog output and the alarms.
The low end is entered directly as RPM.
P01.05
Hysteresis of the
Input Response Level
Range: 0 .. 1
Hysteresis of the input response level:
Setting:
0 : Hysteresis approx. 0.8 volts (for A5S sensors)
1 : Hysteresis approx. 0.1 volts (for MPU or NAMUR sensors)
P01.06
Reserved for future applications

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Parameter Group P01.xx (continued)
Measurement Configuration, Sensor Monitoring
Parameter No.
Meaning of Parameter
Setting Range of Parameter
Description of Parameters and their Settings
P01.07
Reserved for future applications
P01.08
Sensor monitoring on/off
Range: 0 .. 2
If the sensor is monitored, the fault alarm may be latched until it is reset.
Setting:
0 : off (sensor monitor disabled)
1 : on
2 : on, latched
Note:
If P01.08 set to 0, Step P01.09 is meaningless.
P01.09
Mode of sensor monitoring
Range: 0 .. 5
Setting:
0 : Without monitoring
1 : Checks sensor current drain
2 : Checks signal voltage level volt sensor at stand still
3 : Current drain and voltage level
4 : Checks signal voltage level inductive sensor at stand still
5 : Checks signal voltage level NAMUR sensor at stand still
Note:
- Selection of Setting 0 makes Step P01.08 meaningless.
- The voltage level check is only possible with Braun sensor typeA5S...
In this instance a signal lead break between sensor and D521 will be
detected at stand still of the machine. This check requires a jumper
between terminals 14 and 16. Maximum admissible signal voltage is
30Vdc.
- For Ex Applications with SIL2 requirements (with A5S1.. and D461)
P01.09 must be set to 2.
- For Non-Ex Applications with SIL2 requirements (with A5S0)
P01.09 must be set to 3.
P01.10
Fix value 001

D521-Manual_EN_Rev07 2017_05_26 Page 14 of 31
Parameter Group P02.xx
Display
Parameter No.
Meaning of Parameter
Setting Range of Parameter
Description of Parameters and their Settings
P02.00
LSDs on zero
Range: 0 .. 2
If the speed display uses 4 or more digits, for application reasons, the lesser
significant digits (LSD) may appear fluctuating. To avoid irritations by not
significant digits, a number of them may be permanently kept at zero.
Set the parameter to the number of LSDs to be kept on zero.
P02.01
Display updating sequence
Range: 0.1 .. 9.9
(seconds)
Independent from the response time used for other functions, the display
may have its own up-dating sequence - again in the interest of stabilized and
well legible readings. Set the time between updates in steps of 0.1 sec.
A recommended value is 0.3 sec.

D521-Manual_EN_Rev07 2017_05_26 Page 15 of 31
Parameter Group P03.xx
Analog Output
Parameter No.
Meaning of Parameter
Setting Range of Parameter
Description of Parameters and their Settings
P03.00
High end of analog output
Range: 00001 .. 99999
(e.g. RPM)
The high end (corresponding to 20 mamps) is programmed by the same
terms as used in step P01.03 (e.g. in RPM).
P03.01
Low end of analog output
Range: 00001 .. 99999
(e.g. RPM)
The low end (corresponding to 0 resp. 4 mamps) is programmed by the
same terms as used in step P01.03.
P03.02
Live Zero
Range: 0 .. 1
The analog signal can be output without or with live zero.
Setting:
0 : " without live zero" = 0...20 mA
1 : "with live zero" = 4...20 mA
P03.03
Output mode
Range: 0 .. 1
Setting:
0 : signal voltage (10 V)
1 : current (20 mA)
P03.04
Forced output level at
sensor fault condition
Range: 0 .. 2
Setting:
0 : no, output follows measured speed
1 : min: output goes to < 0 mamps
2 : max: output goes to approx. 21 mamps
P03.05
Characteristics of analog
output increasing/decreasing
Range: 0 .. 1
Setting:
0 : normal (0/4. .20 mA with increasing speed)
1 : inverted (20...0/4 mA with increasing speed)

D521-Manual_EN_Rev07 2017_05_26 Page 16 of 31
Parameter Group P04.xx
Alarm SP1
Parameter No.
Meaning of Parameter
Setting Range of Parameter
Description of Parameters and their Settings
P04.00
Setpoint SP1
Range: 00001 .. 99999
Setpoint SP1 is programmed in the same terms (e.g. RPM) as selected for
the display of the variable in step P01.03.
P04.01
Hysteresis bandwidth of SP1
Range: 00.1 .. 99.9
(xx.x % of SP1)
The hysteresis is the margin between condition "excess" (>) and "no excess"
(<), defined by its bandwidth. Without hysteresis, the alarm might be unstable
at the switching point (relay chattering) if the speed surpasses the setpoint
slowly).
The hysteresis bandwidth is set as a percentage of the setpoint.
P04.02
Hysteresis position of SP1
Range: 0 .. 1
The hysteresis band may be placed above or below setpoint. "Above"
means, the alarm goes to excess state (>), when the speed exceeds "set-
point plus tolerance", and it cancels to no-excess (<), when the speed drops
below setpoint.
"Below" means, the alarm goes to excess (>), when the speed exceeds the
setpoint, and it cancels to no-excess (<), when the speed drops below "set-
point minus tolerance".
Setting:
0 : hysteresis above SP1 (recommended when monitoring n < SP1)
1 : hysteresis below SP1 (recommended when monitoring n > SP1)
P04.03
Relay state at ' n > SP1 '
Range: 0 .. 1
Without power supply, the alarm outputs are non-conducting, and the relays
are de-energized. To consider safety aspects of the application, this No-
Power condition can be assigned to either alarm > or < condition.
Setting:
0 : relay de-energized at ' n < SP1 '
1 : relay de-energized at ' n > SP1 '
P04.04
Starter function effective for
Setpoint SP1
Range: 0 .. 1
The starter function may be effective for each setpoint individually. Thereby it
is possible, for instance, to disable a low speed alarm during the starter
phase, whereas a high speed alarm remains active all the time.
Setting:
0 : starter not effective for setpoint SP1
1 : starter effective for setpoint SP1
P04.05
Relay state at starter condition
Range: 0 .. 1
At starter condition, the alarm may be forced to states
' n < SP1 ' or ' n > SP1' (if starter function is effective for the alarm).
Setting:
0 : ' n < SP1 '
1 : ' n > SP1 '
P04.06
Forced state SP1 at
sensor fault condition
Range: 0 .. 2
At sensor fault, the alarm may be forced to states ' n < SP1 ' or ' n > SP1'.
Setting:
0 : no forced state, state acc. to measured speed
1 : state forced to ' n > SP1'
2 : state forced to ' n < SP1 '

D521-Manual_EN_Rev07 2017_05_26 Page 17 of 31
Parameter Group P05.xx
Alarm SP2
Parameter No.
Meaning of Parameter
Setting Range of Parameter
Description of Parameters and their Settings
P05.00
Setpoint SP2
Range: 00001 .. 99999
Setpoint SP2 is programmed in the same terms (e.g. RPM) as selected for
the display of the variable in step P01.03.
P05.01
Hysteresis bandwidth of SP2
Range: 00.1 .. 99.9
(xx.x % of SP)
The hysteresis is the margin between condition "excess" (>) and "no excess"
(<), defined by its bandwidth. Without hysteresis, the alarm might be unstable
at the switching point (relay chattering) if the speed surpasses the setpoint
slowly).
The hysteresis bandwidth is set as a percentage of the setpoint.
P05.02
Hysteresis position of SP2
Range: 0 .. 1
The hysteresis band may be placed above or below setpoint. "Above"
means, the alarm goes to excess state (>), when the speed exceeds "set-
point plus tolerance", and it cancels to no-excess (<), when the speed drops
below setpoint.
"Below" means, the alarm goes to excess (>), when the speed exceeds the
setpoint, and it cancels to no-excess (<), when the speed drops below "set-
point minus tolerance".
Setting:
0 : hysteresis above SP2 (recommended when monitoring n < SP2)
1 : hysteresis below SP2 (recommended when monitoring n > SP2)
P05.03
Relay state at ' n > SP2 '
Range: 0 .. 1
Without power supply, the alarm outputs are non-conducting, and the relays
are de-energized. To consider safety aspects of the application, this No-
Power condition can be assigned to either alarm > or < condition.
Setting:
0 : relay de-energized at ' n < SP2 '
1 : relay de-energized at ' n > SP2 '
P05.04
Starter effective for SP2
Range: 0 .. 1
The starter function may be effective for each setpoint individually. Thereby it
is possible, for instance, to disable a low speed alarm during the starter
phase, whereas a high speed alarm remains active all the time.
Setting:
0 : starter not effective for setpoint SP2
1 : starter effective for setpoint SP2
P05.05
Relay state at starter condition
Range: 0 .. 1
At starter condition, the alarm may be forced to states
' n < SP2 ' or ' n > SP2' (if starter function is effective for the alarm).
Setting:
0 : ' n < SP2 '
1 : ' n > SP2 '
P05.06
Forced state SP2 at
sensor fault condition
Range: 0 .. 2
At sensor fault, the alarm may be forced to states ' n < SP2 ' or ' n > SP2'.
Setting:
0 : no forced state, state acc. to measured speed
1 : state forced to ' n > SP2'
2 : state forced to ' n < SP2 '

D521-Manual_EN_Rev07 2017_05_26 Page 18 of 31
Parameter Group P06.xx
Alarm SP3
Parameter No.
Meaning of Parameter
Setting Range of Parameter
Description of Parameters and their Settings
P06.00
Setpoint SP3
Range: 00001 .. 99999
Setpoint SP3 is programmed in the same terms (e.g. RPM) as selected for
the display of the variable in step P01.03.
P06.01
Hysteresis bandwidth of SP3
Range: 00.1 .. 99.9
(xx.x % of SP)
The hysteresis is the margin between condition "excess" (>) and "no excess"
(<), defined by its bandwidth. Without hysteresis, the alarm might be unstable
at the switching point (relay chattering) if the speed surpasses the setpoint
slowly).
The hysteresis bandwidth is set as a percentage of the setpoint.
P06.02
Hysteresis position of SP3
Range: 0 .. 1
The hysteresis band may be placed above or below setpoint. "Above"
means, the alarm goes to excess state (>), when the speed exceeds "set-
point plus tolerance", and it cancels to no-excess (<), when the speed drops
below setpoint.
"Below" means, the alarm goes to excess (>), when the speed exceeds the
setpoint, and it cancels to no-excess (<), when the speed drops below "set-
point minus tolerance".
Setting:
0 : hysteresis above SP3 (recommended when monitoring n < SP3)
1 : hysteresis below SP3 (recommended when monitoring n > SP3)
P06.03
Relay state at ' n > SP3 '
Range: 0 .. 1
Without power supply, the alarm outputs are non-conducting, and the relays
are de-energized. To consider safety aspects of the application, this No-
Power condition can be assigned to either alarm > or < condition.
Setting:
0 : relay de-energized at ' n < SP3 '
1 : relay de-energized at ' n > SP3 '
P06.04
Starter effective for SP3
Range: 0 .. 1
The starter function may be effective for each setpoint individually. Thereby it
is possible, for instance, to disable a low speed alarm during the starter
phase, whereas a high speed alarm remains active all the time.
Setting:
0 : starter not effective for setpoint SP3
1 : starter effective for setpoint SP3
P06.05
Relay state at starter condition
Range: 0 .. 1
At starter condition, the alarm may be forced to states
' n < SP3 ' or ' n > SP3' (if starter function is effective for the alarm).
Setting:
0 : ' n < SP3 '
1 : ' n > SP3 '
P06.06
Forced state SP3 at
sensor fault condition
Range: 0 .. 2
At sensor fault, the alarm may be forced to states ' n < SP3 ' or ' n > SP3'.
Setting:
0 : no forced state, state acc. to measured speed
1 : state forced to ' n > SP3'
2 : state forced to ' n < SP3 '

D521-Manual_EN_Rev07 2017_05_26 Page 19 of 31
Parameter Group P07.xx
Alarm SP4
Parameter No.
Meaning of Parameter
Setting Range of Parameter
Description of Parameters and their Settings
P07.00
Setpoint SP4
Range: 00001 .. 99999
Setpoint SP4 is programmed in the same terms (e.g. RPM) as selected for
the display of the variable in step P01.03.
P07.01
Hysteresis bandwidth of SP4
Range: 00.1 .. 99.9
(xx.x % of SP)
The hysteresis is the margin between condition "excess" (>) and "no excess"
(<), defined by its bandwidth. Without hysteresis, the alarm might be unstable
at the switching point (relay chattering) if the speed surpasses the setpoint
slowly).
The hysteresis bandwidth is set as a percentage of the setpoint.
P07.02
Hysteresis position of SP4
Range: 0 .. 1
The hysteresis band may be placed above or below setpoint. "Above"
means, the alarm goes to excess state (>), when the speed exceeds "set-
point plus tolerance", and it cancels to no-excess (<), when the speed drops
below setpoint.
"Below" means, the alarm goes to excess (>), when the speed exceeds the
setpoint, and it cancels to no-excess (<), when the speed drops below "set-
point minus tolerance".
Setting:
0 : hysteresis above SP4 (recommended when monitoring n < SP4)
1 : hysteresis below SP4 (recommended when monitoring n > SP4)
P07.03
Relay state at ' n > SP4 '
Range: 0 .. 1
Without power supply, the alarm outputs are non-conducting, and the relays
are de-energized. To consider safety aspects of the application, this No-
Power condition can be assigned to either alarm > or < condition.
Setting:
0 : relay de-energized at ' n < SP4 '
1 : relay de-energized at ' n > SP4 '
P07.04
Starter effective for SP4
Range: 0 .. 1
The starter function may be effective for each setpoint individually. Thereby it
is possible, for instance, to disable a low speed alarm during the starter
phase, whereas a high speed alarm remains active all the time.
Setting:
0 : starter not effective for setpoint SP4
1 : starter effective for setpoint SP4
P07.05
Relay state at starter condition
Range: 0 .. 1
At starter condition, the alarm may be forced to states
' n < SP4 ' or ' n > SP4' (if starter function is effective for the alarm).
Setting:
0 : ' n < SP4 '
1 : ' n > SP4 '
P07.06
Forced state SP4 at
sensor fault condition
Range: 0 .. 2
At sensor fault, the alarm may be forced to states ' n < SP4 ' or ' n > SP4'.
Setting:
0 : no forced state, state acc. to measured speed
1 : state forced to ' n > SP4'
2 : state forced to ' n < SP4 '

D521-Manual_EN_Rev07 2017_05_26 Page 20 of 31
LED off
Relay de-energized
Legend:
LED on
Relay energized
Alarm SP1
variable < SP
variable > SP
variable < SP
State of relay and LED,
if parameter
"Relay state at n > SP " = 0
State of relay and LED,
if parameter
"Relay state at n > SP " = 1
Example: Alarm SP1 as Setpoint with hysteresis "below"
alarm on
Variable
alarm off
time
setpoint SP1
setpoint - hysteresis