MoTeC PLM - Manual (Page 29)

MoTeC Specifications 29
Sensor Heater
Outputs 1
Current Max 8 Amp
Control Bosch - Digital PID
NTK - Constant Voltage
Voltage supply to the PLM should be at least 11V for
proper operation of the sensor heater when using an
NTK UEGO sensor.
Output
Output Type Differential
Calibration User Programmable
Max Output Current 10mA (Short circuit protected)
Output Voltage Swing 0 to 4.5V relative to the negative output (when the
negative output is less than 0V and greater than
negative 4.5V (relative to Battery-) and for output
currents less than 1mA.
If the negative output is greater than 0V then the
output voltage swing will be reduced by the voltage on
the negative output (relative to Battery-)
If the negative output is connected to a floating device
such as a multimeter or other high impedance
measuring device then it will float in the range 1.25V
to 2.5V, this will reduce the output voltage swing by
2.5V to 0 to 2V. In this case connecting the negative
output to Battery- will restore the full output voltage
swing.
Negative Pin Output
Voltage Range
Must be within -4.5 to +5 volts (relative to Battery-)
The negative out put has an impedance of
approximately 5kohm connected to a variable voltage
in the range 1.25V to 2.5V (relative to Battery-)
Min Positive Pin
Output Voltage
-4.5V (relative to Battery-) for current less than 1mA