Specifications

NOTICE
Values available within the different standard groups of resistors:
E12: Closest standard value is 470 Ω
Ω
, creating an input of 449.9
Ω
and 8.997 V.
E24: Closest standard value is 510
Ω
, creating an input of 486.4
Ω
and 9.728 V.
E48: Closest standard value is 511
Ω
, creating an input of 487.3
Ω
and 9.746 V.
E96: Closest standard value is 523
Ω
, creating an input of 498.2
Ω
and 9.964 V.
Analog inputs - terminal X42/1-6
Parameter group for read out: 18-3*. See also VLT® HVAC Drive FC 102 Programming Guide.
Parameter groups for set-up: 26-0*, 26-1*, 26-2* and 26-3*. See also VLT® HVAC Drive FC 102 Programming Guide.
3 x Analog inputs Operating range Resolution Accuracy Sampling Max load Impedance
Used as
temperature
sensor input
-50–+150 °C 11 bits -50 °C
±1 Kelvin
+150 °C
± 2 Kelvin
3 Hz - -
Used as
voltage input
0–10 V DC 10 bits
0.2% of full
scale at cal.
temperature
2.4 Hz
± 20 V
continuously
Approximately
5 kΩ
Table 3.6 Analog Input Specifications
When used for voltage, analog inputs are scalable by
parameters for each input.
When used for temperature sensors, analog inputs scaling
is preset to necessary signal level for specified temperature
span.
When analog inputs are used for temperature sensors, it is
possible to read out feedback value in both °C and °F.
When operating with temperature sensors, maximum cable
length to connect sensors is 80 m non-screened / non-
twisted wires.
Analog outputs - terminal X42/7-12
Parameter group for read out and write: 18-3*. See also
VLT® HVAC Drive FC 102 Programming Guide.
Parameter groups for set-up: 26-4*, 26-5* and 26-6*. See
also VLT® HVAC Drive FC 102 Programming Guide.
3 x Analog
outputs
Output
signal level
Resolution Linearity Max load
Volt 0–10 V DC 11 bits 1% of full
scale
1 mA
Table 3.7 Analog Output Specifications
Analog outputs are scalable by parameters for each
output.
The function assigned is parameter selectable and has the
same options as analog outputs on the control card.
For a more detailed description of parameters, refer to the
VLT® HVAC Drive FC 102 Programming Guide..
Real-time clock (RTC) with back-up
The data format of RTC includes year, month, date, hour,
minute and weekday.
The built-in lithium bac-up battery lasts for a minimum of
10 years, when the frequency converter is operating at 40
°C ambient temperature. If battery pack back-up fails,
exchange the Analog I/O option.
3.1.9
VLT
®
PTC Thermistor Card MCB 112
The MCB 112 option makes it possible to monitor the
temperature of an electrical motor through a galvanically
isolated PTC thermistor input. It is a B-option for frequency
converters with safe torque off.
For information on mounting and installation of the
option, see 6 Application Examples.
X44/1 and X44/2 are the thermistor inputs, X44/12 enables
safe torque off of the frequency converter (T-37) if the
thermistor values make it necessary and X44/10 informs
the frequency converter that a request for safe torque off
came from the MCB 112 in order to ensure a suitable
alarm handling. One of the digital inputs of the frequency
converter (or a DI of a mounted option) must be set to
PTC Card 1 [80] in order to use the information from
X44/10. Configure 5-19 Terminal 37 Safe Stop to the desired
STO functionality (default is safe torque off alarm).
Selection VLT® HVAC Drive FC 102 Design Guide
54 MG16C102 - Rev. 2013-08-20
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