Frequency Measurement and Switching Instruments T411 / T412

Frequency Measurement and Switching Instruments T411 / T412
Frequency Measurement and Switching Instruments
T411 / T412
include special editions
Operating Instructions 383D-64619
Version 2.03
T411: Single Channel Tachometer with Display, Relay and 0/4-20mA Output
Part. Nr: 383Z-05318
T412: Single Channel Tachometer with Display, Relay and 0/2-10V Output
Part. Nr: 383Z-05319
JAQUET AG, Thannerstrasse 15, CH-4009 Basel
Tel. +41 61 306 88 22 Fax +41 61 306 88 18 E-Mail: [email protected]
Operating Instructions T411 / T412
JAQUET AG
Contents:
1
SAFETY INSTRUCTIONS
4
2
PRODUCT FEATURES
4
SPECIFICATIONS
5
3
3.1
General
3.2
Inputs
3.2.1
Analog Sensor connection (Sign)
3.2.2
Digital Sensor connection (IQ)
3.2.3
Sensor Supply
3.2.4
Binary input
3.2.5
Analog output
3.2.6
Relay
3.2.7
Open Collector Output
3.3
Data communication
3.3.1
Serial interface (RS 232)
3.4
Environment
3.4.1
Climatic conditions
3.4.2
Electromagnetic immunity
3.4.3
Other Standards
4
PRINCIPLE OF OPERATION
4.1
General
4.2
Machine factor
4.2.1
Known (Measured)
4.2.2
Calculated
4.2.3
Displaying other physical values
5
6
CONNNECTIONS
13
Front view
T411 terminals
T412 Terminals
HARDWARE CONFIGURATION
Analog Sensor input (Sign)
Digital Sensor input (IQ)
CONFIGURATION WITH PC SOFTWARE
8.1
Software concept
8.2
PC communications
8.3
PC Software settings
8.3.1
Interface (Settings Interface)
8.3.2
Display Interval (Settings Display Interval)
8.4
Parameter list and ranges
8.5
Parameters
8.5.1
System parameters (Configuration System)
8.5.2
Sensor parameter (Configuration Sensor)
8.5.3
Analog Output (Configuration Analog Output)
8.5.4
Limit (Configuration Limit)
8.5.5
Relay parameter and selection of Parameter set (Configuration Relay control)
9
11
12
12
12
12
13
7.1
7.2
8
11
INSTALLATION
6.1
6.2
6.3
7
5
6
6
7
7
8
8
9
9
9
9
10
10
10
10
OPERATING BEHAVIOR
9.1
Power on
9.1.1
Analog Output
9.1.2
Relay Output
9.2
Measurement
9.2.1
The adaptive Trigger level
9.2.2
Signal failure
9.3
Functions
9.3.1
Limits and Window Function
Version 2.03
13
14
14
15
15
15
16
16
16
16
16
16
17
18
18
19
19
20
20
21
21
21
21
21
21
22
22
22
2/27//
Operating Instructions T411 / T412
9.3.2
Parameter set A and B
9.3.3
Relay hold function
9.3.4
Push-Button
9.3.5
Binary Input
9.4
Fault behavior
9.4.1
Sensor fault (Sensor monitoring)
9.4.2
System alarm
9.4.3
Alarm
9.5
Power supply interruption
JAQUET AG
22
22
22
23
23
23
23
23
24
10 MECHANICAL CONSTRUCTION / HOUSING
24
11 ACCESSORIES
25
12 MAINTENANCE / REPAIR
25
13 SOFTWARE VERSIONS
25
14 WARRANTY
25
15 DECLARATION OF CONFORMITY
26
16 CONNECTION DIAGRAM T411/412
27
Version 2.03
3/27//
Operating Instructions T411 / T412
JAQUET AG
1 Safety Instructions
T400 series tachometers may only be connected by trained & competent personnel.
As soon as an electrical circuit is connected that can have dangerous voltages, other
tachometer components may exhibit a dangerous potential.
(Series T400 tachometers do not themselves generate dangerous potentials)
Before opening the tachometer (Hardware configuration) the unit must be disconnected from circuits that may
exhibit dangerous potentials.
These instruments correspond to protection class I and it is therefore mandatory to earth the PE terminal.
The instructions in this operating guide must be strictly adhered to. Not doing so may cause harm to personnel,
equipment or plant.
Instruments in a doubtful condition after electrical, climatic or mechanical overload must be immediately
disconnected and returned to the manufacturer for repair.
The instruments have been developed and produced in accordance with IC-348 and left the factory in perfect
condition.
2 Product features
Series T400 tachometers measure and monitor frequencies (speed proportional values) in the range
0 to 35,000 Hz.
The following are available:
• 1 Current or voltage output (T411 - current, T412 - voltage)
• 1 Sensor frequency output
• 1 Relay
• 2 Limits
• 2 Parameter sets – selectable via binary input
• Sensor monitoring
• System monitoring
The tachometers are configured via T400 PC configuration software.
All settings are in revolutions per minute (rpm).
2 models are available:
T411 Single channel tachometer with display, relay and 0/4-20mA current output
Part Nr.: 383Z-05318
T412 Single channel tachometer with display, relay and 0/2-10 V voltage output
Part Nr.: 383Z-05319
There are following special editions available:
T411 S5
T412 S5
+5V sensor supply
+5V sensor supply
Version 2.03
4/27//
Operating Instructions T411 / T412
JAQUET AG
3 Specifications
Ambient temperature + 20 °C
3.1 General
T411 - T412
Lowest measuring range
Highest measuring range
Minimum Measuring time
(Fixtime)
Effective Measuring time
0 . . . 1.000 Hz
0 . . . 35.00 kHz
Selectable values:
2 / 5 / 10 / 20 / 50 / 100 / 200 / 500ms
1 / 2 / 5 Seconds.
Is based on the minimum measuring time (Fixtime) and the measured
frequency.
•
Input frequency period < Fixtime
End of Fixtime
Input
frequency
Input period
time
Fixtime
typically:
max:
•
teffective
tmax
= Fixtime
= 2 x Fixtime
Input frequency period > Fixtime
End of Fixtime
Ensuing edge
Input
frequency
Fixtime
time
Period of input signal
max:
•
Resolution
Power supply range
Power consumption
PSU failure bridging
Isolation
Isolation voltage
Version 2.03
tmax
= 2 x input frequency period
In the event of sensor signal failure:
teffective = Fixtime + (2 x last input frequency period)
0.05 %
10...36 VDC
10 V : 2.3 W
24 V : 2.6 W
36 V : 3 W
16 V : 4 ms
24 V : 25 ms
36 V : 75 ms
Galvanic isolation between:
• Power supply,
• Sensor input incl. sensor supply, Binary input, Serial interface
• Analog output
• Relay output
• Open collector output
700 VDC / 500VAC
5/27//
Operating Instructions T411 / T412
JAQUET AG
3.2 Inputs
3.2.1 Analog Sensor connection (Sign)
Frequency range (-3dB)
Input impedance
Input voltage
0.01 Hz / 35 kHz
30 kOhm
• Max. 80Vrms
•
Max. frequency against input voltage
100
Input voltage [Veff]
10
O.K.
1
NOT O.K.
0.1
Trigger: 500mVpp
Trigger: 20mVeff
10000
100000
1000
100
10
1
0.1
0.01
0.001
0.01
Signal voltage [Vpp]
0.5
1
2.5
5
10
20
Min. pulse width [µs]
2000
667
333
200
166
125
Frequency [Hz]
Minimum positive pulse
width - digital signals Input
voltage
Integrated pull-up
Trigger level
820 Ohm to +V of the sensor supply (with Jumper J1)
adaptive Trigger level.
Configurable with Jumper J2:
• 250mV … 6.5V (>500mVpp) [Factory configuration]
•
28mV … 6.5V (>20mVrms)
Screen
A terminal is provided for the sensor cable screen. This terminal is connected to
the sensor supply 0V. (0VS)
1 of 3 settings may be configured via software:
• No Sensor Monitoring
• Monitoring of powered sensors
[Also for 2 wire sensors supplied via the Pull-up resistor (Jumper J1) ].
The sensor is considered to be defective if the sensor current
consumption falls outside of Imin and Imax.
Imin. = 0.5…25 mA
Imax. = 0.5…25 mA
• Monitoring of non powered sensors
[For 2 wire sensors such as electromagnetic sensors.]
The sensor is considered to be defective if the circuit is disconnected.
Sensor monitoring
Version 2.03
6/27//
Operating Instructions T411 / T412
JAQUET AG
3.2.2 Digital Sensor connection (IQ)
Frequency range (-3dB)
Input impedance
Input voltage
Minimum pulse width
Trigger level
Screen
Sensor monitoring
0.01 Hz / 35 kHz
46 kOhm
Max. ± 36V peek
Min. pulse width 1.5 µs
• min.Ulow = 1.6 V
• max.Uhigh= 4.5 V
A terminal is provided for the sensor cable screen. This terminal is connected to
the sensor supply 0V. (0VS)
1 of 2 settings may be configured via software:
• No Sensor Monitoring
• Monitoring of powered sensors
[Also for 2 wire sensors supplied via the Pull-up resistor (Jumper J1) ].
The sensor is considered to be defective if the sensor current
consumption falls outside of Imin and Imax.
Imin. = 0.5…25mA
Imax. = 0.5…25mA
3.2.3 Sensor Supply
T411 / T412
T411 S5 / T412 S5
+14 V , short circuit proof
+5V , short circuit proof
Current
[mA]
0
1
5
10
15
20
25
30
35
40
45
50
55
60
T411 / T412
Voltage
[V]
14.29
14.23
14.13
14.04
13.95
13.86
13.79
11.85
10.45
9.32
8.35
7.58
6.98
6.48
T411 S5 / T412 S5
Voltage
[V]
5.50
5.41
5.30
5.21
5.10
5.03
4.94
4.86
4.78
4.69
4.59
4.20
3.90
3.62
If the current limit activates, the sensor supply must be disconnected to reset
the protection.
Version 2.03
7/27//
Operating Instructions T411 / T412
JAQUET AG
3.2.4 Binary input
Use
Levels
Reference
Max voltage
Input resistance
Circuit
For external selection of Parameter set A or B.
• Logic 1 = Parameter set A (Relay control A)
• Logic 0 = Parameter set B (Relay control B)
Logic 1 = V > +3.5V
Logic 0 = V < +1.5V
Sensor supply 0V
36V
Rmin = 10kΩ
Internal pull up resistance to 5V
5 volts
T401 / T402
+Bin
analysis
Shorting the binary input to the sensor 0V
creates logic 0.
parameter set
A
B
pushbutton
OVS
Outputs
3.2.5 Analog output
Type
Load
Open circuit voltage
Operating mode
T411
Current
0…20 / 4…20 mA
Max. 500 Ohm
T412
Voltage
0…10 / 2…10 V
Min. 7 kOhm, Max. 1.4mA
Max. 12V
[V]
[mA]
10.5
10
21
20
6
12
modus
4...20mA / 2...10V mode
(minimal measured
value)
2
4
0
0
0...20mA / 0...10V mode
initial value
Transfer functions
final value
Normal or Inverse (rising or falling characteristic)
output
„normal“
output
„invers“
speed
Resolution
Max Linear error
Accuracy
Damping
Temperature Drift
Reaction time
Version 2.03
speed
[rpm]
speed
12 Bit (4096 steps)
0.1 %
0.5 % of the full range value.
Hardware 11 ms + Software setting (Configuration)
Typically ± 100 ppm/K, max. ± 300 ppm/K
Effective measuring time + 7.5ms
8/27//
Operating Instructions T411 / T412
JAQUET AG
3.2.6 Relay
Type
Limit Hysteresis
Functions
Accuracy
Temperature tolerance
Reaction time
Contact rating
Mono-stable change-over
Programmable – 1 lower and 1 upper set point per limit.
2 programmable parameter sets selectable via binary input
• Reaction to Alarm, Sensor fault, Limit, always on or off.
• „Normal“ or „Inversee“ (normally powered off or on)
• With or without ‘Hold function’ (Reset via Binary input)
0.05% of the value set
Max. ± 10 ppm of the value set
Effective measurement time + 10.5ms
AC: max. 250VAC, 1250VA.
DC:
Contact isolation
1500 VAC
3.2.7 Open Collector Output
Type
External Pull-up
Load voltage
Max load current
Isolation
Opto-coupler (passive)
So far: R = 143 x V (Ic nominal = 7 mA)
After batch 1608: R = 91 x V (Ic nominal = 11 mA)
V = 5 – 30 V
25 mA
1500 VAC
3.3 Data communication
3.3.1 Serial interface (RS 232)
Physical Layer
Max cable length
Transmission rate
Connection
Version 2.03
Similar to EIA RS 232 but with +5V CMOS Level
2m
2400 Baud
Front panel, 3.5mm jack plug
9/27//
Operating Instructions T411 / T412
JAQUET AG
3.4 Environment
3.4.1 Climatic conditions
Standard
Operating temperature
Storage temperature
Relative humidity
KUE in accordance with DIN 40 040
- 20 ... + 70 °C
- 20 ... + 70 °C
75% averaged over the year; up to 90% for max 30 days.
Condensation to be avoided.
3.4.2 Electromagnetic immunity
Radiation
Conducted Emissions
Radiated Emissions
Immunity
Electrostatic discharge
Electromagnetic Fields
In accordance with international standards and EN 50081-2
CISPR 16-1, 16-2;
EN 55011
In accordance with international standards and EN 50082-2
IEC 61000-4-2
Contact 6kV, Air 8kV
IEC 61000-4-3
30V/m,
non modulated and AM 80% at 1000Hz Sine wave
Conducted fast transients
IEC 61000-4-4
2 kV, repetition rate 5kHz duration 15 ms, period 300 ms
Conducted slow transients IEC 61000-4-5
Line / Line +/- 1 kV, Earth line +/- 2kV, 1 per Minute
Conducted high frequency IEC 61000-4-6
3 Vrms (130 dBuV) 10 kHz – 80 MHz,
AM 80% 1000 Hz Sine wave, power cable
Pulse modulation El. - Field ENV 50140
900MHz (100% pulse mod. /200Hz), > 10 V/m
Power freq. magnetic field
IEC 61000-4-8
50Hz, 100 A/m, 2 Minutes
3.4.3 Other Standards
EN 50155
GL
UL
Version 2.03
Railway applications – Electrical Installations on Railway Vehicles
German Lloyd for shipping
Underwriters Laboratories (on request)
10/27//
Operating Instructions T411 / T412
JAQUET AG
4 Principle of operation
4.1 General
T400 tachometers are controlled by a microprocessor. They work according to the period measurement principle
whereby the input period is measured with subsequent computing of the reciprocal value corresponding to the
frequency or speed. The relationship between frequency and speed is established with the Machine factor.
The current output and relay control are determined from the speed.
The relay function is defined via 2 selectable parameter sets. Each parameter set can access the 2 limit values,
the alarm definition, sensor monitoring and other process values.
The 2 limits each have and upper and lower set point (hysteresis setting)
The selection of the valid parameter set is via the binary input.
The relay status may be held until reset via the binary input
The system continuously monitors itself. In addition the sensor may be monitored. Dependent upon the
configuration, these conditions can influence the relay and current output.
The alarm status is indicated via the front panel LED
The frequency output (open collector output) is not influenced by the machine factor and corresponds to the
input signal frequency.
The input of all parameters is via PC software and the RS232 interface. This may also be used to interrogate the
unit’s settings, measurement and general status.
Parameters are retained in an EEPROM.
binary
input
Reset
Analysis of the
binary input
Choice of the parameter set A/B
LED
System control
System failure
Definition Alarm
Sensor supply
Sensor
connexion
Sensor control
Periodic time
measurement
Frequency
calculation
Definition
Relay
Sensor failure
Definition limit 1
Frequency
X
Machine
factor
Speed
Relay
Definition limit 2
Definition current output
Current
output
EEPROM
Open
Collector
RS 232
Display
Version 2.03
11/27//
Operating Instructions T411 / T412
JAQUET AG
4.2 Machine factor
The machine factor establishes the relationship between sensor frequency and corresponding speed.
M=
f
n
M
f
n
=
=
=
Machine factor
Signal frequency at machine speed n
Machine speed
There are 2 ways of determining the value:
4.2.1 Known (Measured)
M=
f
n
M
f
n
=
=
=
Machine factor
Signal frequency at known machine speed
Maschine speed at measured signal frequency
4.2.2 Calculated
The relationship between a sensor signal frequency (f) and speed (n) of a pole wheel is:
f =
n× p
60
f
n
p
=
=
=
Signal frequency in Hz
Pole wheel speed in rpm
Nr. of teeth
From which the formula for machine factor is:
M =
p
60
M
p
=
=
Machine factor
Nr. of teeth
If there is a gearbox between the pole wheel and the shaft speed to be measured:
M =
p×i
60
M
p
i
=
=
=
Machine factor
Nr. of pole wheel teeth
Gearbox ratio
i
n1
n2
p1
p2
=
=
=
=
=
Gearbox ratio
Pole wheel speed (Sensor position) primary side
Pole wheel speed (Speed to be displayed) secondary side
Nr. of teeth primary side
Nr. of teeth secondary side
Whereby the gearbox ratio is:
i=
n1
p
= 2
n2
p1
4.2.3 Displaying other physical values
In principle any physical value that can be measured proportional to speed may be displayed.
The formulae above should then be modified accordingly.
Version 2.03
12/27//
Operating Instructions T411 / T412
JAQUET AG
5 Installation
T400’s may only be installed by trained and competent personnel. An andamaged T400, valid configuration and
suitable installation are required. Please note the Safety Instructions in Section 1.
The power to T400’s should be capable of bOng disconnected via a switch or other emergency means.
These instruments correspond to protection class I and earthing of the PE termical is therefore mandatory.
Before switching the equipment on the power supply voltage should be verified to be in the permissible range.
The sensor cable screen must be connected to the terminal ‘Sh’ so as to minimize the influence of noise. This
terminal is directly connected internally to 0VS.
6 Connnections
6.1 Front view
The T411 / T412 display along with the RS232 interface and the status LED are located at the front.
Communications via RS232 are described in section 8.2.
Version 2.03
13/27//
Operating Instructions T411 / T412
JAQUET AG
6.2 T411 terminals
T411
Sh 0VS Sign +V
IQ
+Bin Col Emit NC
NO COM +I
-I
PE
Sensor connections
Analog output
SH
0VS
+V
Sign
IQ
+I
-I
: Screen – Sensor cable
: Sensor Reference voltage
: Sensor Supply
: Sensor signal analog
: Sensor signal digital
: current positive
: current negative
Supply
+24V
0V
PE
Open Collector output
Col
Emit
0V +24V
: Power (10 ... 36 V)
: Power reference
: Earth
: Collector output
: Signal reference for the Open
Collector
Relay output
NC
NO
Com
: Normally closed
: Normally open
: Common
6.3 T412 Terminals
T412
Sh 0VS Sign +V
IQ
+Bin Col Emit NC
NO COM +U
-U
PE
Sensor connections
Relay output
SH
0VS
+V
Sign
IQ
NC
NO
Com
: Screen - Sensor cable
: Sensor Reference voltage
: Sensor Supply
: Sensor signal analog
: Sensor signal digital
Open Collector output
Col
: Collector output
Emit
: Signal reference for the Open
Collector
Version 2.03
0V +24V
: Normally closed
: Normally open
: Common
Analog output
+U
-U
: Voltage positive
: Voltage negative
Supply
+24V
0V
PE
: Power (10 ... 36 V)
: Power reference
: Earth
14/27//
Operating Instructions T411 / T412
JAQUET AG
7 Hardware configuration
7.1 Analog Sensor input (Sign)
J1
Jumper position
7.2
J1: Sensor type
J2
J2: Adaptive trigger level range
2 wire sensors
(with 820Ohm Pull Up resistance)
28mV to 6.5V
(>20mVrms)
3 wire and electromagnetic sensors
(factory setting)
250mV to 6.5V
[factory setting]
(>500mVpp)
Digital Sensor input (IQ)
No hardware configuration possible or necessary.
Version 2.03
15/27//
Operating Instructions T411 / T412
JAQUET AG
8 Configuration with PC Software
8.1 Software concept
All settings are written via PC to the T400 using the RS232 interface and the aid of the user friendly menu driven
T400 software.
The parameter file may be stored, opened, printed and exchanged between the T400 and a PC.
8.2 PC communications
Communications with the T400 are initiated by the PC via the RS232 interface.
Prior to starting comms, Settings Interface must be set to an appropriate serial interface.
The following settings also apply:
Transmission rate:
Parity Bit:
Data Bits:
Stop Bits:
Connector:
2400 Baud
none
8
2
3.5mm jack plug
female
5
GND TXD RXD
1
2
3
5
9
TXD
RXD
GND
6
The diagram shows the stereo jack plug to D9 connections.
The tachometer RXD must be connected to the PC’s TXD and vice versa.
T411 / T412’s do not use a standard RS232 signal (-5V…+5V) but operate at 5V CMOS levels, compatible with
most PC’s as long as the cable is not longer than 2m.
A suitable cable may be ordered from JAQUET AG – see section 11.
8.3 PC Software settings
8.3.1 Interface (Settings Interface)
In this menu the serial interface for comms with the T400 is defined.
8.3.2 Display Interval (Settings Display Interval)
The T400 measurement status may be interrogated and displayed on the PC via T400 Start – Reading
Measure Data.
The display update time may be set at intervals of ¼ to 10 seconds.
Version 2.03
16/27//
Operating Instructions T411 / T412
JAQUET AG
8.4 Parameter list and ranges
If you already have a configuration file you can open and view it using the T400 Windows Software menu
File Open
You can also connect the T400 to a PC (see section 8.2) and read back the parameters,
T400 Read parameters
Once loaded into the software the parameter set may be printed via File Print
Normal Windows file handling rules apply.
Parameter list and ranges. Factory settings are shown in bold.
Instrument Type
Manufacturer’s code
Software version
Calibration date
Configuration < System >
Machine factor
Minimum Measuring time
Min displayed measured value
Alarm definition
1.0000E-07 ... 1.0000 ... 9.9999E+07
2 / 5 / 10 / 20 / 50/ 100 / 200 / 500 ms / 1/ 2 / 5 Seconds
1.0000E-12 ... 1 ... 1.0000E+12
Only System error System error OR Sensor Monitoring
Configuration < Sensor >
Sensor Type
Sensor input
Sensor current minimum
Sensor current maximum
Active / Passive
Analog (Sign) / Digital (IQ)
0.5 ... 1.5 ... 25.0mA
0.5 ... 25.0mA
Configuration < Analog output >
Measuring range start value
Measuring range end value
Output range
Time constant (Damping)
Configuration < Limits >
Status
Status
Mode
Mode
Lower Set point
Upper Set point
Lower Set point
Upper Set point
Limit 1
Limit 2
Limit 1
Limit 2
Limit 1
Limit 1
Limit 2
Limit 2
Configuration < Relay control >
Switching of control A/B
Selection of actuator
Delay time
Relay Assignment
Control
A
Acknowledge A
Acknowldge
Acknowldge
Version 2.03
B
B
0.0000 ... 90% of the end value
1Hz … 2000.0 … 500000
0 ... 20mA / 4 ... 20mA
(T411)
0 ... 10V / 2 ... 10V.
(T412)
0.0 ... 9.9s
On / Off
On / Off
Normal / Inverse
Normal / Inverse
0.1 … 200.00 … 500000
0.1 … 300.00 … 500000
0.1 … 400.00 … 500000
0.1 … 500.00 … 500000
None (always control A) / Binary Input B1
0 ... 2’000 s
Alarm / Sensor monitor / Limit 1 / Limit 2 / Window / On / Off
Without acknowledge (no hold function) /
Relay held when control active /
Relay held when control inactive
Alarm / Sensor monitor / Limit 1 / Limit 2 / Window / On / Off
Without acknowledge (no hold function) /
Relay held when control active /
Relay held when control inactive
17/27//
Operating Instructions T411 / T412
JAQUET AG
8.5 Parameters
Parameters are changed in the sub menus from the drop down menu „Configuration“.
Warning:
New configurations only become active after being downloaded into the T400 via:
T400 Write Parameters
8.5.1 System parameters (Configuration System)
Machine factor
The machine factor establishes the relationship between sensor frequency and associated speed.
M=
f
n
M
f
n
=
=
=
Machine factor
Signal frequency at machine speed n
Machine speed
See section 4.2 Machine factor.
Once the correct machine factor is entered, all other settings e.g limits are made in rpm.
Minimum Measuring Time
The minimum measuring time determines the time during which the input frequency is measured. Once this time
has lapsed, the calculation is made following the end of the running signal period. The minimum measuring time
may be increased to filter out frequency jitter so as to display a stable reading but at the cost of increased
reaction time.
Minimum displayed value
The minimum displayed value is a measured value under which „0000“ is displayed.
Alarm definition
This function defines the alarm. It may be only system error or a logical OR combination of system error OR
sensor monitoring. During an alarm the LED is off. In addition, the relay is deactivated and the analog output
goes to 0mA (0V) irrespective of the output range.
Version 2.03
18/27//
Operating Instructions T411 / T412
JAQUET AG
8.5.2 Sensor parameter (Configuration Sensor)
Sensor Type
The type of sensor to be used is defined here.
<Sensor active> is for monitoring sensors powered by T400 including 2 wire sensors supplied via the internal
pull up resistor. (Jumper J1).
<Sensor passive> is for monitoring non powered sensors e.g. 2 wire VR sensors.
See also section 9.4.1 Sensor fault (Sensor monitoring).
Sensor input
The sensor input “analog” (Sign) or “digital” (IQ) is defined here.
Sensor current minimum
As long as the sensor current consumption lies above the value <Current Minimum>, the sensor is considered to
be functioning correctly.
Sensor current maximum
As long as the sensor current consumption lies below the value <Current Maximum>, the sensor is considered
to be functioning correctly.
8.5.3 Analog Output (Configuration Analog Output)
T412 T411
[V] [mA]
10.5
10
modus
21
20
4...20mA / 2...10V mode
6
12
(minimal measured
value)
2
4
0
0
0...20mA / 0...10V mode
initial value
final value
speed
[rpm]
Measuring range – start value
Analog output start value 0/4mA or 0/2V
Measuring range – end value
Analog output end value 20mA or 10V
In the case of a negative transfer function the end value must be set smaller than the start value.
Output range
0…20mA or 4…20mA for the T411. 0…10V or 2…10V for the T412.
Output time constant
The analog output signal may be smoothed by applying a software time constant. This damping is deactivated
when the time constant is 0.0 seconds.
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Operating Instructions T411 / T412
JAQUET AG
8.5.4 Limit (Configuration Limit)
The T400 series offers 2 independent limits Limit 1 and 2.
Status
Limits are selected here. If the limit is deactivated, the other values such as set points and mode have no further
effect.
Mode
In Normal Mode the limit is active as soon as the High set point is exceeded. In Inverse Mode the limit is active
from the start (zero speed) and deactivates when the set point is reached (Fail Safe operation)
Upper and Lower Set point
limit
lower
switching point
upper
switching point
activated
deactivated
rpm
As the speed increases, the limit switches when the High set point is reached and remains in that condition until
the speed reduces past the Low set point.
8.5.5 Relay parameter and selection of Parameter set
(Configuration Relay control)
Parameter set A / B selection
As standard parameter set B may be activated via the binary input <Binary input B1>.
If parameter set B is to be deactivated, this setting should be none (always control A)
Delay time when switching A <- B
This value determines the delay from switching the binary input to the switching from parameter set B to
parameter set A.
Relay assignment with control A
Defines the relay behavior in parameter set A.
Relay assignment with control B
Defines the relay behavior in parameter set B.
Relay
Defines the source information for relay switching.
Status register
• Alarm
• Sensormonitor
• Limit 1/2
• Window
• On
• Off
Relay dependency
(Common) Alarm
Sensor status
Selection of Limit 1/2
ExOR combination of both limits
The relay is on
The relay is always off
(8.5.1 System parameters (Configuration System))
(8.5.2 Sensor parameter (Configuration Sensor))
(8.5.4 Limit (Configuration Limit))
Acknowledge
Acknowledge establishes if and under what conditions the relay status is held. A relay that is held no longer
reacts to the assigned signal and can only be reset via the binary input.
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Operating Instructions T411 / T412
JAQUET AG
9 Operating behavior
9.1 Power on
9.1.1 Analog Output
Following power on the output assumes the output range start value. Upon completion of the first measurement
the output goes to the corresponding measured value.
9.1.2 Relay Output
The parameter set determined by the configuration and binary input is valid from the start.
If the relay is assigned to a limit it remains deactivated until completion of the first measurement, following which
it assumes the status defined under Limit.
If the relay is assigned to any other item in the status register it immediately assumes the corresponding status.
If no input frequency is present then after a period of 2 x Fixtime a measured value below the lower set point is
assumed.
9.2 Measurement
Every measurement begins with the positive edge of the input signal. Once the Fixtime has lapsed the next
positive edge ends the running measurement and starts the next.
The resulting effective measurement time is dependent upon whether the input signal period is longer or shorter
than the Fixtime.
Input signal period < Fixtime
End of Fixtime
Input signal period > Fixtime
Ensuing edge
End of Fixtime
Input
Frequency
Ensuing edge
Input
Frequency
Input period
Fixtime
time
time
Period of input signal
Fixtime
Effective measurement period
tMessung typisch = Fixtime
tMessung maximal = 2 x Fixtime
Fixtime
Effective measurement period
tMessung maximal
= 2 x Input signal period
The total measurement time has a resolution of ± 0.4 µs.
The calculation and adaptation of outputs follows immediately after the Fixtime.
With input frequencies outside of the measuring range, the corresponding final values are assumed.
9.2.1 The adaptive Trigger level
After triggering, the trigger level is set for the next pulse
anew.
This guarantees that the trigger level can follow a 50%
reduction in speed from pulse to pulse.
DC offset, resonance and negative pulses have no
influence on the triggering
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old trigger level
trigger level
t
signal to
noise ration
bad sensor
signal
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Operating Instructions T411 / T412
JAQUET AG
9.2.2 Signal failure
In the event of a sudden loss of a good signal no positive edge arrives to complete the measurement
or start a new one. Once the minimum measurement time (Fixtime) has lapsed the unit waits for twice the last
measurement period following which half the last measured speed is assumed.
If the signal remains missing then the measurement approaches zero following an e-function.
9.3 Functions
9.3.1 Limits and Window Function
Since the upper and lower sets points are freely selectable a large hysteresis may be set. If that is not necessary
we recommend setting a 10% hysteresis.
The Window function allows an Exclusive OR combination of Limits 1 and 2, whereby the status of both limits is
first determined (including any inversion) and a subsequent ExOR comparison executed.
As soon as Relay assignment is <Window> the relay behaves as follows:
• With identical limit modes (both Normal or both Inverse) the relay is activated when the measured value lies
between the Limit 1 and 2 settings.
• If different modes are set (one Normal and the other Inverse) the relay is deactivated when the measured
value is between Limts 1 and 2.
9.3.2 Parameter set A and B
T400’s have 2 parameter sets available that define the relay assignment. Parameter set A would normally be
used. If another parameter set is needed, e.g. for test purposes, the binary input may be used to change to
parameter set B. The transfer from parameter set B to parameter set A may be delayed in the range 0 to 2000
seconds. Transferring from A to B is however immediate and not affected by this setting.
To be able to select parameter sets using the binary input, Relay control - Selection of Actuator must be
appropriately set, see 8.5.5.
Binary input condition
High (5V) „normal“
Low (0V) „connected to 0V“
Selected Parameter set
A
B
9.3.3 Relay hold function
A latch function may be assigned to the relay. By selecting <Relay is hold if control is active> the relay is
activated once the assigned limit is active and remains held even if the input frequency would no longer cause a
trip. By selecting <Relay is hold if control is inactive>, the deactivared state of the relay is held. The latched
status may be reset by cycling power or via the binary input, whereby the binary input must be activated as per
the configuration (0V or 5V) for between 0.1 and 0.3 seconds.
9.3.4 Push-Button
The front panel push button internally connects the binary input to 0VS thus generating a logic 0.
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9.3.5 Binary Input
2 functions are executable using the binary input:
• Switching between parameter sets A and B. See 9.3.2 Parameter set A and B.
• Resetting a latched relay. See 9.3.3 Relay.
The binary input has an internal pull up resistor to +5V and is therefore normally logic High.
5 Volt
T401 / T402
Shorting the binary input to the sensor supply 0V creates a logic 0.
+Bin
Switching the input for between 0.1 and 0.3 seonds resets a latched relay
but does not influence parameter set selection, which requires longer
than 0.3 seconds.
10k
analysis
parameter set
A
B
pushbutton
OVS
9.4 Fault behavior
9.4.1 Sensor fault (Sensor monitoring)
The sensor may be monitored in 2 ways. With sensors powered by the T400 the sensor supply current is
monitored. If the current falls outside the permitted range then sensor fault is indicated.
If the sensor is not powered by the T400 then it may only be monitored for disconnection. If disconnected,
sensor fauly is indicated.
The T400 behavior in the event of a sensor fault is dependent on the configuration:
Alarm Configuration
Outputs in the event of a sensor fault
LED
Only System error
On
System error OR Sensor monitoring
Off
Analog output
Current (T411)
Relay
Voltage (T412)
Measured value output per configuration
0mA
0V
deactivated
9.4.2 System alarm
If the microprocessor detects a checksum fault (RAM, ROM or EEPROM) the measured value is set to 0rpm,
the analog output goes to 0/4mA and the relay is deactivated.
Alarm Configuration
Outputs in the event of a System alarm
LED
Analog output
Current (T411)
Voltage (T412)
0mA
0V
Relay
Only System error
System error OR Sensor monitoring
Off
deactivated
9.4.3 Alarm
As long as a combined alarm is present no measurements are conducted and the outputs behave as described
above. Once the fault or alarm condition is removed the last correct measured value is assumed. Eventual limit
activation is not taken into account.
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Operating Instructions T411 / T412
JAQUET AG
9.5 Power supply interruption
If the PSU remains off for longer than the permitted period the outputs deactivate i.e. the analog output goes to
0mA (0V), the relay deactivates and the „open collector“ ouput becomes high resistance.
Once the supply resumes in range the T400 begins its initialization routine (see capital 9.1)
10 Mechanical Construction / Housing
Housing Material
Mounting
Terminals
Sealing to EN 60925
resp. IEC 925
Dimensions
Version 2.03
Noryl SE GFN1, black RAL 9005
Using DIN 43835 Form B clamps
Detachable Terminal block.
2.5 mm 2 - Cable or 1.5 mm2 flex
AWG 24 – AWG 12
UL CSA
Housing
IP 40
Terminals
IP 20
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Operating Instructions T411 / T412
JAQUET AG
11 Accessories
Interface cable PC – T400
Part Nr.
830A-36889
Cable for PC to tachometer communications.
12 Maintenance / Repair
T400 tachometers do not require maintenance since they exhibit minimal drift and do not use batteries or other
consumables. If the instrument is to be cleaned please note the protection class. It is preferable to remove all
forms of power (including relay contact supply) during cleaning. Surface cleaning may be carried out using spirit,
pure alcohol or soap only.
13 Software Versions
•
For software amplifier version 1.24 or higher and configuration software 1.15 or higher is the digital
sensor input available. Additionally is the range increased to 500k.
•
For software display version 1.2 are values to 999.9k possible.
14 Warranty
The standard warranty in the event of a manufacturing defect confirmed by Jaquet consists of repair or
replacement within 12 months of delivery. Ancillary costs are excluded as is damage caused by use outside the
specification. Complaints concerning visible defects will only be accepted if advised to Jaquet within 14 days of
receipt.
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Operating Instructions T411 / T412
JAQUET AG
15 Declaration of conformity
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Operating Instructions T411 / T412
JAQUET AG
16 Connection diagram T411/412
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