Endress+Hauser ria45 - Configuring Analog Outputs; Configuring Relays and Limit Values

Commissioning RIA45
26 Endress+Hauser
7.4.4 Step 4: Configuring the analog output(s)
The device is fitted with an analog output (optionally with two analog outputs). These
outputs can be freely assigned to the inputs and channels available in the device.
Setup
Analog out 1
Analog out 2
Assignment: assignment of the output
• off: switched off
• Analog input 1: universal input 1
• Analog input 2: universal input 2
• Calc value 1: calculated value 1
• Calc value 2: calculated value 2
Signal type: select active
signal range of the output
The output range for the current output corresponds to Namur NE43, i.e. a range
to 3.8 mA or 20.5 mA is used. If the value continues to increase (or if it continues
to drop), the current remains at the limits 3.8 mA or 20.5 mA.
0-20 mA output: only the overrange is available. An overrange is also only
available for the voltage output. The limit of the overrange is 10% here.
Lower range
Upper range
To be configured like universal input, see Step 2 →  24
7.4.5 Step 5: Configuring the relays, assigning and monitoring limit
values
As an option, the device has two relays with limit values, which are either switched off, or
can be assigned to the input signal or the linearized value of analog input 1 or 2 or the
calculated values. The limit value is entered as a numerical value including the position of
the decimal point. Limit values are always assigned to a relay. Each relay can be assigned
to a channel or a calculated value. In the "Error" mode, the relay functions as a fault
indicator relay and switches for every fault or alarm.
The following settings can be made for each of the two limit values: assignment, function,
set point, hysteresis, operating mode
1)
, time delay
1)
and failure mode
1)
.
Setup
Relay 1
Relay 2
Assignment:
Which value should be monitored?
off, Analog input 1, Analog input 2, Calc value 1, Calc
value 2, Error
Function:
Operating mode of the relay (for a description, see
"Operating modes") →  27)
Min, Max, Gradient, out-band, in-band
Set point:
Set point 2:
Limit value
Enter the limit value with the position of the decimal
point. Set point 2 is only displayed for outband and
inband.
1) can only be set in the menu Expert/Output/Relay