Functional Description; Transmitter Unit - Delta DE212 GLOBAL Operation And Installation Manual

Wireless deadman system with differential pressure switch function for aero plane refuelling trucks and dispensers
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3.2
F
D
UNCTIONAL
ESCRIPTION
3.2.1
T
RANSMITTER UNIT:
Handle
The transmitter is controlled by a small microprocessor. It is always turned on in a standby mode, and
will therefore discharge the battery after 3 to 5 months, depending on the state of the battery, if it is
not recharged during that period of time.
A fully charged battery have a capacity of at least 12 hours of continues operation. The long operating
time is made possible by the Delta timeshare transmission system, WTT.
The battery is charged by the stainless steel contacts at the back side of the transmitter. The
transmitter must be charged on the charge station on the receiver front panel, or on a mains battery
charger, CH300 delivered by Delta. The charging connections, are protected from discharging of the
built-in battery.
The Deadman push-button is activated by a stainless steel handle as long as it is pressed.
The radio signal activates an output circuit in the receiver, supplying the output or the Deadman
function on the receiver's connector. This is the output for the Deadman button for refuelling.
When the handle is released, the Deadman output is off after max 1,5 seconds.
If the STOP-button is pressed, all function stops instantly and the normally operated STOP output,
used for emergency stop, in the receiver goes off as long as the button is pressed.
The third push-button called, extra function, is normally used for hose reel in control, or pump RPM
control. Note that this function is on the standard delivery not possible to operate simultaneously with
the Deadman function. For simultaneously operation, the receiver must be reprogrammed.
There are two light diodes, LED on the front panel marked "TX" and "LB".
The TX LED is yellow and is blinking when the transmission is active, and will continue to blink for a
short time after the operative push-button is released, sending an active stop signal to the receiver.
The LB LED is a dual function LED. It blinks with a red light when the battery is at low voltage or
capacity, and should be recharged. The transmitter can be used for about 15 min. after the red LED is
turned on. At a lower battery voltage, the TX LED is turned off, indicating that the transmitter has
stopped transmitting.
During normal operation, the LB LED is flashing green, indication that the connection with the receiver
is good.
The LB red LED is active only when the transmitter is activated. By pressing the Stop- button, the
battery can be tested during active transmission.
D
RC AS
ELTA
LB LED
User and Installation Manual, DE212 GLOBAL
STOP Button
TX LED
Extra function
Deadman
Battery
Page 11 of 36
Document 02743

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