thuba PS 830, Руководство пользователя, Страница: 35 / 72

Manual BVS 19 ATEX E 080 X 31
Edition March 2020 thuba Ltd., CH-4002 Basel
Copyright Switzerland
Failure to carry out this measure could result in
a ‘welding of the relay contacts’ and, conse-
quently, to a loss of the explosion protection
4.2.5 Blockdiagram
5 Configuration and operation
Configure the PS 830 with the 4 keys and the
display.
5.1 Display
The built-in 8-figures display indicates operation
modes, present pressure or flow rate data, as
well as malfunctions.
5.2 Alarm monitor Lamp
The PS 830 has a monitor lamp below the dis-
play. This red lamp (LED) blinks if the pressure
inside of the Ex p-housing is below the defined
minimum pressure. In bypass mode the LED is
permanently on and in normal operation the
lamp is off.
Lamp Meaning
  
flashing
The pressure inside of the cabinet
is below 0.8 mbar!
No explosionproof inside
cabinet!

constant on
Bypass mode is active –
no explosion proof inside cabinet!
⊗
constant off
Ex protection is “OK” –
normal operation
Cut-off-contacts; alarm-contacts
solenoid mains