Digital Output Function - WEG SRW 01 Manual Del Usuario

3. DIGITAL OUTPUT FUNCTION

The Control Unit (UC) has 4 relay digital outputs (O1 to O4), which are configured through the parameters P277,
P278, P279 and P280. The connection diagram is presented in the section 3.11 of the user manual.
The Expansion Digital Unit (EDU) has 4 relay digital outputs (O5 to O8), which are configured through the
parameters P281, P282, P283 and P284. The connection diagram is presented in the section 3.14 of the user
manual.
P277 – Digital Output O1 Function
P278 – Digital Output O2 Function
P279 – Digital Output O3 Function
P280 – Digital Output O4 Function
P281 – Digital Output O5 Function
P282 – Digital Output O6 Function
P283 – Digital Output O7 Function
P284 – Digital Output O8 Function
Adjustable 0 = Internal use (P202)
Range: 1 = Ladder
2 = Fieldbus
3 = Alarm/Fault (NO) Signal
4 = Trip/Error (NO) Signal
5 = Trip/Error (NC) Signal
6 = Check back (NO) Signal
Proprieties: Sys, CFG
Description:
They define the relay output control origin.
Internal Use: it is used according to selected operation mode (P202). It indicates that for this operation mode the
digital output has a predefined function.
Ladder: it is used by the user program implemented in Ladder.
Fieldbus: it is used directly by the industrial network master.
Alarm/Fault (NO) Signal: it is used to signal Alarm or Fault. In case of Alarm or Fault the output is closed,
remaining like this until the cause of failure is not present anymore and the reset control is set.
Trip/Error (NO) Signal: it is used to signal Trip or Error. In case of Trip or Error (Ex. No communication with the
Current Measuring Unit) the output is closed, remaining this until the cause of the failure is not present anymore
and the reset control is set.
Trip/Error (NC) Signal: it is used to signal Trip or Error. In case of Trip or Error (Ex. No communication with the
Current Measuring Unit) the output is closed, remaining like this until the cause of the failure is not present anymore
and the reset control is set.
Check Back (NO) Signal: is used to indicate the check back signal state, according to the selection of the check
back type (P208) and configuration of the operating mode (P202). If the check back type is configured for motor
current (P208 = 0), the digital output is activated as soon as the reading of the motor current is identified. If P208
= 1, the digital output is activated whenever the digital input defined to be the check back signal is activated. For
P208 = 2, the digital output is activated whenever the output(s) configured for internal use is activated.
Factory Setting: 1