Danfoss VLT AQUA Drive FC 202 Design Guide

7.11.5
VLT
®
Sensor Input Option MCB 114
The sensor input option card MCB 114 can be used in the following cases:
•
Sensor input for temperature transmitters PT100 and PT1000 for monitoring bearing temperatures.
•
As general extension of analog inputs with one additional input for multi-zone control or dierential pressure
measurements.
•
Support extended PID controllers with I/Os for setpoint, transmitter/sensor inputs.
Typical motors, designed with temperature sensors to protect bearings from being overloaded, are tted with three
PT100/1000 temperature sensors; One in front, one in the back-end bearing, and one in the motor windings. The VLT
®
Sensor Input Option MCB 114 supports 2- or 3-wire sensors with individual temperature limits for under-/overtemperature.
An auto-detection of sensor type PT100 or PT1000 takes place at power-up.
If the measured temperature is either below the
specied low limit, or above the specied high limit, the option generates
an alarm. The individual measured temperature on each sensor input can be read out in the display or by readout
parameters. If an alarm occurs, the relays or digital outputs can be programmed to be active high by selecting [21] Thermal
Warning in parameter group 5-** Digital In/Out.
A fault condition has a common warning/alarm number associated with it, which is Alarm/Warning 20, Temp. input error. Any
present output can be programmed to be active in case the warning or alarm appears.
7.11.5.1
Electrical and Mechanical Specications
Analog Input
Number of analog inputs 1
Format 0–20 mA or 4–20 mA
Wires 2
Input impedance <200 Ω
Sample rate 1 kHz
Third order lter 100 Hz at 3 dB
The option is able to supply the analog sensor with 24 V
DC (terminal 1).
Temperature Sensor Input
Number of analog inputs supporting PT100/1000 3
Signal type PT100/1000
Connection PT 100 2 or 3 wire/PT1000 2 or 3 wire
Frequency PT100 and PT1000 input 1 Hz for each channel
Resolution 10 bit
Temperature range
-50–204 °C
-58–399 °F
Galvanic Isolation
The sensors to be connected are expected to be galvanically isolated from the AC line voltage
level. IEC 61800-5-1 and UL508C
Cabling
Maximum signal cable length 500 m (1640 ft)
Specications
VLT
®
AQUA Drive FC 202
190 Danfoss A/S © 09/2014 All rights reserved. MG20N622
77

Danfoss VLT AQUA Drive FC 202 Specifications

General

Brand	Danfoss
Model	VLT AQUA Drive FC 202
Category	DC Drives
Language	English