Trip Amplifier 1/209
Hardware Description
3.5.2
Testing Analog Inputs
The test is carried out using the PC-MENU or the handheld device.
(Use the TERMINAL MODE <Alt-E> in the PC-MENU)
P711 <Enter>
P712 <Enter>
P713 <Enter>
P714 <Enter>
Example
Type: P711 <Enter>
Display: P711 = 0.567 (= 56.7%) equivalent to
11.34 mA for Dead Zero
13.07 mA for Live Zero
3.5.3
Testing Digital Inputs
Digital Inputs/Outputs are optional for standard devices.
They can be used to register external events e.g. process feedback signals, service
position, reset for devices with a hold function, formula changes etc.
Digital input 1 can be used to count pulses or measure a frequency using the interrupt
facility of the processor.
Testing can be accomplished via the handheld commmunicator or a personal computer.
(Use the TERMINAL MODE <Alt-E> in the PC-MENU)
P721 <Enter>
P722 <Enter>
P723 <Enter>
P724 <Enter>
Example
Type: P721 <Enter>
Display: P721 = 0
3.5.4
Testing Push Buttons
Front push buttons are used to set alarm points and to step the display to show measured
values, trip points or computed values.
Testing can be accomplished via the handheld commmunicator or a personal computer.
(Use the TERMINAL MODE <Alt-E> in the PC-MENU)
P731 <Enter>
P732 <Enter>
P733 <Enter>
Example
Type: P731 <Enter>
Display: P731 = 0
66
shows analogue input 1 (input scaled 0 ... 1)
shows analogue input 2 (input scaled 0 ... 1)
shows analogue input 3 (input scaled 0 ... 1)
shows analogue input 4 (input scaled 0 ... 1)
shows digital input 1 (the value is 0 or 1)
shows digital input 1 (the value is 0 or 1)
shows digital input 1 (the value is 0 or 1)
shows digital input 1 (the value is 0 or 1)
shows key 1 (the values is 0 or 1)
shows key 2 (the values is 0 or 1)
shows key 3 (the values is 0 or 1)