Trip Amplifier 1/209
Hardware Description
3.5.7
Testing Digital Outputs
Standard devices offer a digital output option. Digital outputs can be activated in addition
to the relays. This allows for additional trip points or ON/OFF control functions.
They may also be used to drive an external multiplexer to turn the 4 analogue inputs into
multiples thereof (64 maximum).
Testing can be accompished via the handheld commmunicatoror a personal computer.
(Use the TERMINAL MODE <Alt-E> in the PC-MENU)
(Set jumper MODE to ENABLE position see section "Functional Test").
P761 = 1 <Enter>
P761 = 0 <Enter>
P762 = 1 <Enter>
P762 = 0 <Enter>
P763 = 1 <Enter>
P763 = 0 <Enter>
P764 = 1 <Enter>
P764 = 0 <Enter>
Example
Type: P761 = 1 <Enter>
Display: P761 = 0
3.5.8
Testing LEDs
Front LEDs are used to indicate the relay status (red). A green LED can be employed to
indicate the status of the self-monitoring feature.
The LEDs can also be used to fulfil other tasks e.g. all LEDs flash: device error. The
display will then show the error code (see section "Error Messages").
Testing can be accompished via the handheld commmunicator or a personal computer.
(Use the TERMINAL MODE <Alt-E> in the PC-MENU)
(Set jumper MODE to ENABLE position)
P771 = 1 <Enter>
P771 = 0 <Enter>
P772 = 1 <Enter>
P772 = 0 <Enter>
P773 = 1 <Enter>
P773 = 0 <Enter>
P774 = 1 <Enter>
P774 = 0 <Enter>
P775 = 1 <Enter>
P775 = 0 <Enter>
Example
Type: P771 = 1 <Enter>
Display: P771 = 1
68
Output 1 = 1
Output 1 = 0
Output 2 = 1
Output 2 = 0
Output 3 = 1
Output 3 = 0
Output 4 = 1
Output 4 = 0
LED 1 = on
LED 1 = off
LED 2 = on
LED 2 = off
LED 3 = on
LED 3 = off
LED 4 = on
LED 4 = off
LED 5 = on
LED 5 = off