GE DS3800XAIA Redundant module

The EPQ96-2 has two PWM outputs for use together with e.g. a Caterpillar governor. Both outputs are a 500 Hz 6 V PWM signal. One output is proportional to the up/down control. The outputs are based on an open collector with a 1 k pull-up resistor connected to an internal 6V DC supply. The below table shows the relationship between the analogue output and the PWM output.The other output is intended for adjusting the speed droop settings on e.g. a Caterpillar governor. The output is adjustable by means of a potentiometer, “PWM duty”, located on the rear of the unit. The setting is only done once during commissioning. Note that the two PWM outputs are not galvanically separated, and they have a common terminal for the PWM return.

CAN Interface 

The EPQ96-2 can be used for converting a CAN J1939 telegram into an analogue voltage signal, current signal or a PWM signal. The EPQ96-2 will automatically recognise the CAN telegram and adjust the settings according to the CAN data. The EPQ96-2 has input for CAN J1939, so the output value can be controlled from a CAN unit. The min. and max, potentiometers are still active in the CAN mode, the CAN input is then able to control the output inside the set min. max. value. The integrating time is still adjusted by means of the potentiometer located on the EPQ96-2. The CAN input is equipped with a LED, located close to the CAN input, this LED is activated when a telegram is received.

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