5. Speed Setpoint Adjusters and Sensors
HELENOS III
9
On request, the potentiometers, as specified under 5.1 and 5.2, can be supplied with
analogue adjustment knob with lock in place of the standard rotating knob. In this case,
ordering specification is SW..-..-m.
Equally, instead of the knob a clamping fixture can be installed. Ordering specification is
to changed to SW ..-..-k.
5.3. Setpoint Value Adjustment by Current Signal
For the speed setpoint value a current signal of 4–20 mA can be directly connected to the
control unit. If the signal fails, the governor will set the speed to a programmable substitute
value.
5.4. Setpoint Value Adjustment by Pedal
This unit is basically an angular position transducer that translates a foot pedal into a
proportional current or voltage for 0 - 45° rotation. The resulting output can be used for
speed setting. For more information refer manual E 83 005 - e.
5.5. Pressure Sensors
For pneumatic setpoint adjustment are pressure sensors available as follows:
pressure range
up to 10 bar
DSG 01 (EDV- No.: 604 00 026 00)
up to 5 bar
DSG 02 (EDV- No.: 604 00 026 01)
As boost pressure sensor for a range up to 2 bar the pressure sensor DSG 03
(EDV- No.: 604 00 024 02) is available.
