Menu 7 − Analog I/O

Mode: Open‑Loop

Analog Outputs
The update rate for analog outputs is 250μs; although the output will only change at the update rate defined by the source parameter for the input. The following exceptions apply:

  1. Speed Feedback (03.002) has an update rate of 4ms and includes a 16ms window filter. If this parameter is selected as a source for output 2 the update rate of the source changes to 250us and the only filter applied is the window filter associated with the position feedback interface (i.e. P1 Feedback Filter (03.042) for the P1 interface). It should be noted that this feature is only provided when the position feedback is from a drive interface and not from an option module.
  2. If either analogue output is set up for current mode then the update rate for both analogue outputs is 4ms.

Analog Inputs
The normal sample rate for the analog inputs is 4ms, however this is increased to 250us for analogue inputs 1 and 2 under the following conditions:

  1. The maximum and the minimum for the input are at their default values of 100.00% and -100.00% respectively.
  2. The input is set to voltage mode.
  3. One of the destinations given in the table below must be selected.
  4. If the destination is Analog Reference 1 (01.036) or Analog Reference 2 (01.037) the reference system must not be in uinpolar mode, i.e. Bipolar Reference Enable (01.010) must be one.

Note that Analogue Input 1 Fast Update Active (07.026) and Analogue Input 2 Fast Update Active (07.027) indicate if fast updating is active for each input.

Parameter Drive modes Comment
Analog Reference 1 (01.036) RFC-A, RFC-S The data from Analog Reference 1 (01.036) is processed in the 250us task so that the reference to the speed controller is updated every 250us. 
Analog Reference 2 (01.037) RFC-A, RFC-S The data from Analog Reference 2 (01.037) is processed in the 250us task so that the reference to the speed controller is updated every 250us. 
Hard Speed Reference (03.022) RFC-A, RFC-S
Torque Reference (04.008) RFC-A, RFC-S
Power Input 1 (03.010)
Power Input 2 (03.013)
Power Input 3 (03.014)
Regen

 

 


Parameter07.003  Analog Input 3
Short descriptionDisplays the value of analog input 3
ModeOpen‑Loop
Minimum-100.00Maximum100.00
Default Units%
Type16 Bit VolatileUpdate Rate4ms write
Display FormatStandardDecimal Places2
CodingRO, FI, ND, NC, PT

See Analog Input 1 (07.001).


Parameter07.004  Monitored Temperature 1
Short descriptionDisplays the temperature set up by Temperature Monitor Select 1
ModeOpen‑Loop
Minimum-250Maximum250
Default Units°C
Type16 Bit VolatileUpdate RateBackground write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

Thermal monitoring is provided within the drive to protect the power stage and the control system from over temperature.

Monitored Temperature 1 (07.004), Monitored Temperature 2 (07.005) and Monitored Temperature 3 (07.006) give an indication of the temperature of three selected monitoring points within the drive power system or control system. The required monitoring points can be selected using Temperature Monitor Select 1 (07.038), Temperature Monitor Select 2 (07.039) and Temperature Monitor Select 3 (07.052) respectively. The default values give two monitoring points in the power system in Monitored Temperature 1 (07.004) and Monitored Temperature 2 (07.005), and control board temperature 1 in Monitored Temperature 3 (07.006).


Parameter07.005  Monitored Temperature 2
Short descriptionDisplays the temperature set up by Temperature Monitor Select 2
ModeOpen‑Loop
Minimum-250Maximum250
Default Units°C
Type16 Bit VolatileUpdate RateBackground write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

See Monitored Temperature 1 (07.004) for details.


Parameter07.006  Monitored Temperature 3
Short descriptionDisplays the temperature set up by Temperature Monitor Select 3
ModeOpen‑Loop
Minimum-250Maximum250
Default Units°C
Type16 Bit VolatileUpdate RateBackground write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

See Monitored Temperature 1 (07.004) for details.


Parameter07.015  Analog Input 3 Mode
Short descriptionDefines the mode of analog input 3
ModeOpen‑Loop
Minimum7Maximum10
Default10Units 
Type8 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW, TE

ValueTextDescription
6VoltVoltage
7Therm Short CctTemperature measurement input with short circuit detection
8ThermistorTemperature measurement without short circuit detection
9Therm No TripTemperature measurement input with no trips
10DisabledInput always zero

The table below gives all the possible input modes for analog input 3.

Mode Function
Voltage Voltage
Therm Short Cct Temperature measurement input with short circuit detection
Thermistor Temperature measurement without short circuit detection
Therm No Trip Temperature measurement input with no trips
Disabled Input always zero (1)

(1) When the Digital I/O only is present this mode is used disable the current source as the input is on a shared connection with Digital Output 2.


Parameter07.016  Analog Input 3 Scaling
Short descriptionDefines the scaling factor for analog input 3
ModeOpen‑Loop
Minimum0.000Maximum10.000
Default1.000Units 
Type16 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places3
CodingRW

The scaling, offset and invert functions for analog input 3 are defined in the same way as for analog input 1. See Analog Input 1 Scaling (07.008).


Parameter07.017  Analog Input 3 Invert
Short descriptionInverts the signal of analog input 3
ModeOpen‑Loop
Minimum0Maximum1
Default0Units 
Type1 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW

The scaling, offset and invert functions for analog input 3 are defined in the same way as for analog input 1. See Analog Input 1 Scaling (07.008).


Parameter07.018  Analog Input 3 Destination
Short descriptionDefines the ouptut paramter for analog input 3
ModeOpen‑Loop
Minimum0.000Maximum59.999
Default0.000Units 
Type16 Bit User SaveUpdate RateDrive reset read
Display FormatStandardDecimal Places3
CodingRW, DE, PT, BU

The scaling, offset and invert functions for analog input 3 are defined in the same way as for analog input 1. See Analog Input 1 Scaling (07.008).


Parameter07.032  Analog Input 3 Offset
Short descriptionDefines the offset of analog input 3
ModeOpen‑Loop
Minimum-100.00Maximum100.00
Default0.00Units%
Type16 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places2
CodingRW

The scaling, offset and invert functions for analog input 3 are defined in the same way as for analog input 1. See Analog Input 1 Scaling (07.008).


Parameter07.033  Power Output
Short descriptionInstant output power
ModeOpen‑Loop
Minimum-100.0Maximum100.0
Default Units%
Type16 Bit VolatileUpdate Rate250µs write
Display FormatStandardDecimal Places1
CodingRO, ND, NC, PT

This is an instantaneous power output with fast update rate that is primarily intended to be used as a power feed-forward for applications with a Regen system front end. The full scale (100.0%) value is equal to a power of 3 x (VM_DC_VOLTAGE[MAX] / 2√2) x Full Scale Current Kc (11.061). This is compatible with the power output provided in Unidrive SP and is directly comptible with Power Input 1 (03.010) (and the other power feed-forward parameters) in Regen mode. The scaling is intended to cover the maximum range of likely power in the drive. For example with a 400V 7.5kW drive the full scale d.c. link voltage is 831V and Kc=38.222A, and so the full scale value of this parameter is 3 x (831 / 2√2) x 38.222 = 33.689kW. For Open-loop, RFC-A and RFC-S modes a positive value of power indicates power flowing from the drive to motor. For Regen mode a positive value of power indicates power flowing from the supply to the regen drive.


Parameter07.034  Inverter Temperature
Short descriptionDisplays the estimated junction temperature of the hottest power device within the drive inverter
ModeOpen‑Loop
Minimum-250Maximum250
Default Units°C
Type16 Bit VolatileUpdate RateBackground write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

Inverter Temperature (07.034) shows the estimated junction temperature of the hottest power device within the drive inverter. If this temperature exceeds the switch down threshold defined for the power stage the switching frequency is reduced provided this feature has not been disabled (see Auto-switching Frequency Change (05.035)).


Parameter07.035  Percentage Of d.c. Link Thermal Trip Level
Short descriptionDisplays the percentage of the maximum allowed temperature as estimated by the thermal model of the d.c. link components
ModeOpen‑Loop
Minimum0Maximum100
Default Units%
Type8 Bit VolatileUpdate RateBackground write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

Percentage Of d.c. Link Thermal Trip Level (07.035) gives the percentage of the maximum allowed temperature as estimated by the thermal model of the d.c. link components.


Parameter07.036  Percentage Of Drive Thermal Trip Level
Short descriptionDisplays the percentage of the thermal trip level of the temperature monitoring point or thermal model in the drive that is highest
ModeOpen‑Loop
Minimum0Maximum100
Default Units%
Type8 Bit VolatileUpdate RateBackground write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

Percentage Of Drive Thermal Trip Level (07.036) gives the percentage of the thermal trip level of the temperature monitoring point or thermal model in the drive that is highest. This includes all thermal monitoring points (not just those selected by Monitored Temperature 1 (07.004), Monitored Temperature 2 (07.005) and Monitored Temperature 3 (07.006)), Inverter Temperature (07.034) and Percentage Of d.c. Link Thermal Trip Level (07.035).

Percentage Of d.c. Link Thermal Trip Level (07.035) is used directly to give Percentage Of Drive Thermal Trip Level (07.036), but for all other monitored values which are temperatures this is given by Percentage of thermal trip level = (Temperature - 40oC) / (Trip temperature - 40oC) x 100%

The location of the measurement or the thermal model that is related to this temperature is given in Temperature Nearest To Trip Level (07.037). If Percentage Of Drive Thermal Trip Level (07.036) exceeds 90% Drive Over-temperature Alarm (10.018) is set to one. If Percentage Of Drive Thermal Trip Level (07.036) reaches 100% one of the trips given in the table below is initiated. The trip can be reset when the percentage of thermal trip level fall below 95%.

Temperature Trip
Inverter Temperature (07.034) OHt Inverter
Power system temperature OHt Power
Percentage Of d.c. Link Thermal Trip Level (07.035) OHt dc Link
Control system temperature OHt Control


Parameter07.037  Temperature Nearest To Trip Level
Short descriptionDisplays the thermistor location or the model that corresponds to the value shown in Percentage Of Drive Thermal Trip Level
ModeOpen‑Loop
Minimum0Maximum20999
Default Units 
Type16 Bit VolatileUpdate RateBackground write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

Temperature Nearest To Trip Level (07.037) shows the thermistor location or the model that corresponds to the value shown in Percentage Of Drive Thermal Trip Level (07.036) in the form xxyzz as shown in the table below.

Source xx y zz
Control system 00 0 01: Control board thermistor 1
Control system 00 0 02: Control board thermistor 2
Control system 00 0 03: I/O board thermistor
Control system 00 1 00: Inverter thermal model
Control system 00 2 00: D.c. link thermal model
Control system 00 3 00: Braking IGBT thermal model
Power system 01 0 zz: Thermistor location defined by zz in the power system
Power system 01           Rectifier number zz: Thermistor location defined by zz in the rectifier


Parameter07.038  Temperature Monitor Select 1
Short descriptionDefines the temperature to be monitored in Monitored Temperature 1
ModeOpen‑Loop
Minimum0Maximum1999
Default1001Units 
Type16 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW

Temperature Monitor Select 1 (07.038) selects the temperature to be monitored in Monitored Temperature 1 (07.004) using the format given for Temperature Nearest To Trip Level (07.037). If the monitoring point selected does not exist then the monitored temperature is always zero. The table below shows the monitoring points that can be selected.

Source xx y zz
Control system 00 0 01: Control board thermistor 1
Control system 00 0 02: Control board thermistor 2
Control system 00 0 03: I/O board thermistor
Control system 00 1 00: Inverter thermal model
Control system 00 3 00: Braking IGBT thermal model
Power system 01 0 zz: Thermistor location defined by zz in the power system
Power system 01       Rectifier number zz: Thermistor location defined by zz in the rectifier

For a multi-module power system the power system measurement that can be selected is shown in the table below. It should be noted that the specific power module cannot be selected and that the highest temperature from each of the power modules is given.

Source xx y zz
Power system 01       0      01: U phase power device thermistor
Power system 01 0 02: V phase power device thermistor
Power system 01 0 03: W phase power device thermistor
Power system 01 0 04: General rectifier thermistors
Power system 01 0 05: General power system thermistor

 

 


Parameter07.039  Temperature Monitor Select 2
Short descriptionDefines the temperature to be monitored in Monitored Temperature 2
ModeOpen‑Loop
Minimum0Maximum1999
Default1002Units 
Type16 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW

See Temperature Monitor Select 1 (07.038).


Parameter07.046  Analog Input 3 Thermistor Type
Short descriptionDefines the thermistor type for analog input 3
ModeOpen‑Loop
Minimum0Maximum1
Default0Units 
Type8 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW, TE

ValueText
0DIN44082
1KTY84
2PT100 (4W)
3PT1000 (4W)
4PT2000 (4W)
52.0mA (4W)
6PT100 (2W)
7PT1000 (2W)
8PT2000 (2W)
92.0mA (2W)

Analog Input 3 Thermistor Type (07.046) defines the operation of the temperature feedback interface for analog input 3 when Analog Input 3 Mode (07.015) is set up for a temperature feedback mode. When a temperature feedback mode is selected a 2mA current source is connected to analog input 3 to supply the temperature feedback device that is connected to the input.

Analog Input 3 Thermistor Type (07.046) Compatible devices
0: DIN44082 Three thermistors in series as specified in DIN44082 standard
1: KTY84 KTY84 PTC thermistor
2: PT100 (4W) PT100 PTC thermistor with 4 wire connection
3: PT1000 (4W) PT1000 PTC thermistor with 4 wire connection
4:PT2000 (4W) PT2000 PTC thermistor with 4 wire connection
5: 2.0mA (4W) Any device. Full scale equivalent to a resistance of 5k Ohms with 4 wire connection
6: PT100 (2W) PT100 PTC thermistor with 2 wire connection
7: PT1000 (2W) PT1000 PTC thermistor with 2 wire connection
8: PT2000 (2W) PT2000 PTC thermistor with 2 wire connection
9: 2.0mA (2W) Any device. Full scale equivalent to a resistance of 5k Ohms with 2 wire connection

DIN44082 and KTY84 devices should always be connected directly to analog input 3. The other devices can be connected directly to analog input 3 if the 2 wire connection option is selected. Alternatively these devices can be used with a 4 wire connection to remove the effect of voltage drops due to the 2mA supply current as shown below. If a 4 wire connection is selected analog input 1 is disabled and Analog Input 1 (07.001) always reads as 0.0%.


Parameter07.047  Analog Input 3 Thermistor Feedback
Short descriptionDisplays the measured resistance of analog input 3
ModeOpen‑Loop
Minimum0Maximum5000
Default Units
Type16 Bit VolatileUpdate RateBackground write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

Analog Input 3 Thermistor Feedback (07.047) shows the measured resistance.


Parameter07.048  Analog Input 3 Thermistor Trip Threshold
Short descriptionDefines the thermistor trip threshold for analog input 3
ModeOpen‑Loop
Minimum0Maximum5000
Default3300Units
Type16 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW

Over-temperature detection becomes active for input 3 if  Analog Input 3 Thermistor Feedback (07.047) > Analog Input 3 Thermistor Trip Threshold (07.048). Over-temperature becomes inactive for input 3 if  Analog Input 3 Thermistor Feedback (07.047) <  Analog Input 3 Thermistor Reset Threshold (07.049). If Analog Input 3 Mode (07.015) is 7 or 8 (i.e. tripping is enabled) an Thermistor.003 trip is initiated. The default values for Analog Input 3 Thermistor Trip Threshold (07.048) and Analog Input 3 Thermistor Reset Threshold (07.049) are the levels specified in the DIN 44082 standard.


Parameter07.049  Analog Input 3 Thermistor Reset Threshold
Short descriptionDefines the thermistor reset threshold for analog input 3
ModeOpen‑Loop
Minimum0Maximum5000
Default1800Units
Type16 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW

See  Analog Input 3 Thermistor Trip Threshold (07.048).


Parameter07.050  Analog Input 3 Thermistor Temperature
Short descriptionDisplays the temperature of the device based on the resistance to temperature characteristic for the specified device
ModeOpen‑Loop
Minimum-50Maximum300
Default Units°C
Type16 Bit VolatileUpdate RateBackground write
Display FormatStandardDecimal Places0
CodingRO, ND, NC, PT

If a KTY84, PT100, PT1000 or PT2000 type device is selected for temperature feedback then Analog Input 3 Thermistor Temperature (07.050) shows the temperature of the device based on the resistance to temperature characteristic specified for this device. Otherwise Analog Input 3 Thermistor Temperature (07.050) = 0.0.


Parameter07.052  Temperature Monitor Select 3
Short descriptionDefines the temperature to be monitored in Monitored Temperature 3
ModeOpen‑Loop
Minimum0Maximum1999
Default1Units 
Type16 Bit User SaveUpdate RateBackground read
Display FormatStandardDecimal Places0
CodingRW

See Temperature Monitor Select 1 (07.038).