# 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 Power Input 2 Power Input 3 | Regen |

The diagram below shows the parameter structure for each I/O. See Internal I/O Identifier (11.068) for details of which I/O is present for different I/O options.

Parameter | 07.001 Analog Input 1
--- | ---
Short description | Displays the value of analog input 1
Mode | Open‑Loop
Minimum | -100.00 | Maximum | 100.00
Default |  | Units | %
Type | 16 Bit Volatile | Update Rate | 4ms write
Display Format | Standard | Decimal Places | 2
Coding | RO, FI, ND, NC, PT

Each analogue input has a resolution of 11 bits plus sign. The inputs can operate in different modes (defined by Analog Input 1 Mode (07.007) for analogue input 1). These modes include voltage, current and thermistor modes. The available modes depend on the hardware configuration and are given in the table below.

Internal I/O Identifier (11.068) | Analogue Input 1 | Analogue Input 2 | Analogue Input 3
0: Standard Analogue and Digital I/O | Bipolar Voltage, Current | Bipolar Voltage, Current | Bipolar Voltage, Thermistor
1: Digital I/O | Not present | Not present | Thermistor, Disabled
2: HVAC Analogue and Digital I/O | Unipolar Voltage, Current, Thermistor | Unipolar Voltage, Current, Thermistor | Not present

The "Input Level" is defined for the different modes in the table below.

Mode | Input Level
Voltage | (Input Voltage / 10V) x 100.00%
0-20mA | (Input Current / 20mA) x 100.00%
20-0mA | ((20mA - Input Current) / 20mA) x 100.00%
4-20mA | ((Input Current - 4mA) / 16mA) x 100.00%
20-4mA | ((20mA - Input Current) / 16mA) x 100.00%
Thermistor | (Input resistance / 10K Ohm) x 100%

Analog Input 1 (07.001) is derived as follows:

Limits
A1 is the value after the minimum and maximum limits are applied.

If Analog Input 1 Minimum (07.040) ≥ Analog Input 1 Maximum (07.043) then:
A1 = 0.00% whatever the input level.

If Analog Input 1 Minimum (07.040) < 0.00% and Analog Input 1 Maximum (07.043) > 0.00% then:
A1 = Input Level x (100.00% / Analog Input 1 Maximum (07.043))
A1 is then limited between -100% and +100%.

Otherwise:
Input Level is limited between Analog Input 1 Minimum (07.040) and Analog Input 1 Maximum (07.043)
A1 = [Input Level - Analog Input 1 Minimum (07.040)] x 100.00% / (Analog Input 1 Maximum (07.043) - Analog Input 1 Minimum (07.040))

For thermistor modes it should be noted that Analog Input 1 Minimum (07.040) and Analog Input 1 Minimum (07.040) have no effect and that the input resistance is limited between 0 and 5kΩ.

Parameter | 07.004 Monitored Temperature 1
--- | ---
Short description | Displays the temperature set up by Temperature Monitor Select 1
Mode | Open‑Loop
Minimum | -250 | Maximum | 250
Default |  | Units | °C
Type | 16 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, 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).

Parameter | 07.005 Monitored Temperature 2
--- | ---
Short description | Displays the temperature set up by Temperature Monitor Select 2
Mode | Open‑Loop
Minimum | -250 | Maximum | 250
Default |  | Units | °C
Type | 16 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT

See Monitored Temperature 1 (07.004) for details.

Parameter | 07.006 Monitored Temperature 3
--- | ---
Short description | Displays the temperature set up by Temperature Monitor Select 3
Mode | Open‑Loop
Minimum | -250 | Maximum | 250
Default |  | Units | °C
Type | 16 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT

See Monitored Temperature 1 (07.004) for details.

Parameter | 07.008 Analog Input 1 Scaling
--- | ---
Short description | Defines the scaling factor of analog input 1
Mode | Open‑Loop
Minimum | 0.000 | Maximum | 10.000
Default | 1.000 | Units |
Type | 16 Bit User Save | Update Rate | Background read
Display Format | Standard | Decimal Places | 3
Coding | RW

Analog Input 1 (07.001) is modified by Analog Input 1 Scaling (07.008), Analog Input 1 Offset (07.030) and Analog Input 1 Invert (07.009) before it is routed to its destination as follows:

A1O = Analog Input 1 (07.001) + Analog Input 1 Offset (07.030)

A1O is the value after the offset has been applied and is limited between -100.00% and 100.00%

A1S = A1O x Analog Input 1 Scaling (07.008)

A1S is the value after the scaling and the offset have been applied and is limited between -100.00% and 100.00%

If Analog Input 1 Invert (07.009) = 0 then A1I = A1S otherwise A1I = -A1S

A1I is the value after the invert, scaling and offset have been applied and is the final value that is routed to the destination defined by Analog Input 1 Destination (07.010).

Parameter | 07.009 Analog Input 1 Invert
--- | ---
Short description | Inverts the signal for analog input 1
Mode | Open‑Loop
Minimum | 0 | Maximum | 1
Default | 0 | Units |
Type | 1 Bit User Save | Update Rate | Background read
Display Format | Standard | Decimal Places | 0
Coding | RW

See Analog Input 1 Scaling (07.008).

Parameter | 07.010 Analog Input 1 Destination
--- | ---
Short description | Defines the output parameter for analog input 1
Mode | Open‑Loop
Minimum | 0.000 | Maximum | 59.999
Default | 1.036 | Units |
Type | 16 Bit User Save | Update Rate | Drive reset read
Display Format | Standard | Decimal Places | 3
Coding | RW, DE, PT, BU

See Analog Input 1 Scaling (07.008).

Parameter | 07.025 Calibrate Analog Input 1 Full Scale
--- | ---
Short description | Caibrates the input level for analog input 1
Mode | Open‑Loop
Minimum | 0 | Maximum | 1
Default | 0 | Units |
Type | 1 Bit Volatile | Update Rate | Background read
Display Format | Standard | Decimal Places | 0
Coding | RW, NC

For analog input 1, and in voltage mode only, the full scale value used to determine the input level can be changed from 10V by calibrating the input. The calibration process is triggered by setting Calibrate Analog Input 1 Full Scale (07.025) to one. Calibrate Analog Input 1 Full Scale (07.025) is cleared automatically when the calibration process is complete. After calibration the actions are as follows:

Input voltage during calibration | Result
V < 1.5V | The calibration result is ignored and the full scale is set to 10V. Analog Input 1 Full Scale (07.051) is set to zero.
1.5V < V < 2.5V | The calibration result is ignored and the full scale or Analog Input 1 Full Scale (07.051) are not affected.
V > 2.5V | The calibration result is used to set full scale and the value is also stored in Analog Input 1 Full Scale (07.051).

It should be noted that Analog Input 1 Full Scale (07.051) is a power-down save parameter, and so the result is automatically retained after power-down.

Parameter | 07.026 Analogue Input 1 Fast Update Active
--- | ---
Short description | Analogue Input 1 Fast Update Active
Mode | Open‑Loop
Minimum | 0 | Maximum | 1
Default |  | Units |
Type | 1 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT

Analogue Input 1 Fast Update Active (07.026) is one if the destination for analogue input 1 is being updated at the fast rate of 250us.

Parameter | 07.030 Analog Input 1 Offset
--- | ---
Short description | Defines the offset of analog input 1
Mode | Open‑Loop
Minimum | -100.00 | Maximum | 100.00
Default | 0.00 | Units | %
Type | 16 Bit User Save | Update Rate | Background read
Display Format | Standard | Decimal Places | 2
Coding | RW

See Analog Input 1 Scaling (07.008).

Parameter | 07.033 Power Output
--- | ---
Short description | Instant output power
Mode | Open‑Loop
Minimum | -100.0 | Maximum | 100.0
Default |  | Units | %
Type | 16 Bit Volatile | Update Rate | 250µs write
Display Format | Standard | Decimal Places | 1
Coding | RO, 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 (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.

Parameter | 07.034 Inverter Temperature
--- | ---
Short description | Displays the estimated junction temperature of the hottest power device within the drive inverter
Mode | Open‑Loop
Minimum | -250 | Maximum | 250
Default |  | Units | °C
Type | 16 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, 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)).

Parameter | 07.035 Percentage Of d.c. Link Thermal Trip Level
--- | ---
Short description | Displays the percentage of the maximum allowed temperature as estimated by the thermal model of the d.c. link components
Mode | Open‑Loop
Minimum | 0 | Maximum | 100
Default |  | Units | %
Type | 8 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, 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.

Parameter | 07.036 Percentage Of Drive Thermal Trip Level
--- | ---
Short description | Displays the percentage of the thermal trip level of the temperature monitoring point or thermal model in the drive that is highest
Mode | Open‑Loop
Minimum | 0 | Maximum | 100
Default |  | Units | %
Type | 8 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, 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

Parameter | 07.037 Temperature Nearest To Trip Level
--- | ---
Short description | Displays the thermistor location or the model that corresponds to the value shown in Percentage Of Drive Thermal Trip Level
Mode | Open‑Loop
Minimum | 0 | Maximum | 20999
Default |  | Units |
Type | 16 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, 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 (or internal braking resistor in servo Drive)
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

Parameter | 07.038 Temperature Monitor Select 1
--- | ---
Short description | Defines the temperature to be monitored in Monitored Temperature 1
Mode | Open‑Loop
Minimum | 0 | Maximum | 1999
Default | 1001 | Units |
Type | 16 Bit User Save | Update Rate | Background read
Display Format | Standard | Decimal Places | 0
Coding | RW

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 (or internal braking resistor in Servo Drive)
Control system | 00 | 1 | 00: Inverter thermal model
Control system | 00 | 3 | 00: Braking IGBT thermal model
Control system | 00 | 4 | 00: Rectifier 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

Parameter | 07.039 Temperature Monitor Select 2
--- | ---
Short description | Defines the temperature to be monitored in Monitored Temperature 2
Mode | Open‑Loop
Minimum | 0 | Maximum | 1999
Default | 1002 | Units |
Type | 16 Bit User Save | Update Rate | Background read
Display Format | Standard | Decimal Places | 0
Coding | RW

See Temperature Monitor Select 1 (07.038).

Parameter | 07.040 Analog Input 1 Minimum
--- | ---
Short description | Defines the minimum value for analog input 1
Mode | Open‑Loop
Minimum | -100.00 | Maximum | 100.00
Default | -100.00 | Units | %
Type | 16 Bit User Save | Update Rate | Background read
Display Format | Standard | Decimal Places | 2
Coding | RW

See Analog Input 1 (07.001).

Parameter | 07.043 Analog Input 1 Maximum
--- | ---
Short description | Defines the maximum value for analog input 1
Mode | Open‑Loop
Minimum | -100.00 | Maximum | 100.00
Default | 100.00 | Units | %
Type | 16 Bit User Save | Update Rate | Background read
Display Format | Standard | Decimal Places | 2
Coding | RW

See Analog Input 1 (07.001).

Parameter | 07.051 Analog Input 1 Full Scale
--- | ---
Short description | Displays the full scale value of analog input 1
Mode | Open‑Loop
Minimum | 0 | Maximum | 65535
Default |  | Units |
Type | 16 Bit Power Down Save | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT, BU

See Calibrate Analog Input 1 Full Scale (07.025).

Parameter | 07.052 Temperature Monitor Select 3
--- | ---
Short description | Defines the temperature to be monitored in Monitored Temperature 3
Mode | Open‑Loop
Minimum | 0 | Maximum | 1999
Default | 1 | Units |
Type | 16 Bit User Save | Update Rate | Background read
Display Format | Standard | Decimal Places | 0
Coding | RW

See Temperature Monitor Select 1 (07.038).