TECNORD
RC-DBX/PCM/NBM
Use and Maintenance Manual
Page
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Zero Voltage Adjustment
A special procedure allows to adjust the Zero Voltage, i.e. the voltage that is output when the PRS or JLP joysticks are in their zero
position. This fine adjustment is usually not necessary because the dead band of the controlled equipment allows small differences
between the ideal voltage and the real output signal in the zero position. Anyway it is possible to set a different zero output voltage for
every function with the following procedure:
1.
Keep the Receiver electronics outside its enclosure in order to access the two pushbuttons: Blue Key (B-KEY) and Yellow Key (Y-
KEY).
2.
Press simultaneously the Blue and Yellow keys for about ten seconds, then bypassing the calibration menu, until the dot on the
display’s right digit starts flashing. The current value of the zero voltage for function 1 is displayed.
3.
The menu allows to set the zero voltage in sequence for all the implemented functions. In order to switch from one function
to the next, press simultaneously the Blue and Yellow keys.
In the calibration menu the display dots give information about which parameter is currently being configured in the following way:
Example: V
ZERO
(F1) = 2.51V (dot blinking)
Example: V
ZERO
(F2) = 2.51V (dot blinking)
Example: V
ZERO
(F3) = 2.51V (dot blinking)
Example: V
ZERO
(F4) = 2.51V (dot blinking)
Example: V
ZERO
(F5) = 2.51V (dot blinking)
Example: V
ZERO
(F6) = 2.51V (dot blinking)
Example: V
ZERO
(F7) = 2.51V (dot blinking)
8.4
System Menu (for trained staff only)
The System Menu allows basic configurations of the RC-DBX , RC-PCM and RC-NBM systems; depending on the system, the
configuration process involves different steps, which are organized as submenus.
For RC-DBD/DBR systems the sequence of submenus is:
1.
Proportional Trigger Acquisition (only useful for DBR, only available with the Service Cable connected).
2.
Optional Function Setup.
3.
System Type Setup
For RC-DBM/PCM/NBM systems the sequence of submenus is:
1.
EV9 (venting) safety valve mode of operation.
2.
EV49 (safety valve) mode of operation.
3.
Optional Function Setup.
4.
Output Range Setup
Each of the these procedures is outlined in the following paragraphs.
