Manual 26185
TecJet 110 Fuel Metering System
Woodward
9
CAN Shield
X = CAN Shield
The CAN Shield can be used to terminate the shield of the CAN wiring. Internally,
this pin is connected to the TecJet 110 case through a capacitor.
4-20mA Analog Input
A = 4–20 mA Analog Input (+)
B = 4–20 mA Analog Input (–)
The 4–20 mA Analog Input is configurable as the mass flow demand input like
the PWM input.
Input
Impedance:
225
Ω
Input Type:
4–20 mA differential
Max Input Current:
25 mA ±2%
Input Common Mode Range:
At least ±50 V
Common Mode Rejection Ratio:
-60 dB minimum
Safe Input Common
Mode Voltage:
At least ±200 V
Accuracy:
±1.5% of full scale @ 25 °C
Temperature
Drift:
300ppm/°C
Status Output
E = Status Output
J = Discrete/RS232 Common
The status output indicates whether the TecJet 110 valve is operating correctly. It
will be "on" when the valve is operating normally and "off" when any warnings or
errors are active. The Status Output is a high-side switch: it will be actively driven
to Battery (+) when "on" and pulled to Battery (–) through a resistor when "off".
Output Type:
High Side Discrete Output Driver
Drive Current:
500 mA max (w/ 24 V supply and 48
Ω
load)
Load
Range:
48
Ω
to 100 k
Ω
RS-232 Serial Communication Service Port
M = RS-232 TX
N = RS-232 RX
J = Discrete/RS-232 Common
The access to the service port will be provided through the main connector. The
RS-232 communications will be provided for the purposes of configuring and
servicing the TecJet 110 valve.
Isolation:
None
Baud Rate:
38.4 Kbaud