About the CTW900
CTW900 | 35
It can also be used for remote control of the product through specific cable.
For this connection mode, use:
■
cable with D-Sub9 (DB9) male and female connectors with pin to pin connection (mouse extension or Null-
Modem type, market standard);
■
maximum length of 10 meters.
4.6.2
Battery
In order to keep the operation of the internal clock while the converter is powered down, the keypad (HMI) of the
CTW900 has a battery.
If the battery is low, or not installed on the keypad (HMI), the clock time will be incorrect and the indication
“A181 – “Clock with invalid value” will occur every time the converter is powered up.
In this case, replace the battery for a new one of the same model (CR2032), according to the procedure
presented in Figure 4.9.
Figure 4.9
– HMI battery replacement
NOTE!
The life expectation of the battery is of approximately 10 years. At the end of the useful life, do not
dispose of the battery in common garbage, but in a proper place for batteries.
