ABB UNITROL 1020 - Analog Inputs

 Chapter 3 - Device Overview
UNITROL 1020 User Manual 3BHS335648 E82 29
3.3.7 Analog Inputs
Input Function
Description
None
Input not assigned
Auto Remote Setpoint
External setpoint input to Auto regulator
PF Remote Setpoint (Requires
PF/VAR SW)
External setpoint input to PF regulator
Var Remote Setpoint (Requires
PF/VAR SW)
External setpoint input to Var regulator
Manual Remote Setpoint
External setpoint input to Manual regulator
Open Loop Remote SP
External setpoint input to open loop
UM Aux (Requires UM AUX SW)
Auxiliary supply to the summing point of Auto regulator
VAR Aux Measurement
Auxiliary supply to the summing point of the PF/VAR regulator
Cooling Media Temperature
Input temperature measurement for the temperature influence limiter
Ie External
Reserved for real-time simulator
PSS Power Injection
(Requires PSS SW)
PSS power injection point, scaling see PSS test interface
PSS Frequency Injection
(Requires PSS SW)
PSS frequency injection point, scaling see PSS test interface
PSS LeadLag Injection
(Requires PSS SW)
PSS lead lag injection point, scaling see PSS test interface
PSS External Input
(Requires PSS SW)
Input for external PSS signal
Digital Input 13(+) & 14(-)
Assign digital inputs
Digital Input 15(+) & 16(-)
Assign digital inputs
Digital Input 17(+) & 18(-)
Assign digital inputs
Note: When configuring an external setpoint from the analog input list shown above, the
"Remote SP Enable" digital input should also be configured. For more information see
Chapter 3.3.5 Digital Inputs.
3.3.7.1 Level of the Analog Inputs
A minimum and maximum voltage level can be set for every analog input. This level
represents a defined scaling, which is shown in the table below.
Input Function
Uin0%
Min (-10… +10 V)
Uin100%
Max (-10…10 V)
Remarks
Auto Remote Setpoint
Auto setpoint min
Auto setpoint max
See Chapter 3.4.1.1
PF Remote Setpoint
(Requires PF/VAR SW)
PF setpoint min
PF setpoint max
See Chapter 3.4.1.1
Var Remote Setpoint
(Requires PF/VAR SW)
PF setpoint min
PF setpoint max
See Chapter 3.4.1.1
Manual Remote Setpoint
PF setpoint min
PF setpoint max
See Chapter 3.4.1.1
Open Loop Remote SP
PF setpoint min
PF setpoint max
See Chapter 3.4.1.1
UM aux
UM Aux min
UM Aux max
Range – 100% to +100%
VAR Aux Measurement
-10%
+10%
Fix scaling
Cooling Media Temperature
-100 °C
+100 °C
Fix scaling
Ie External
Ie Ext Range min
Ie Ext Range max
PSS Power Injection
(Requires PSS SW)
Neg. peak value
Pos. peak value
Scaling from 1% to 10%
PSS Frequency Injection
(Requires PSS SW)
Neg. peak value
Pos. peak value
Scaling from 0.1% to 1.0%
PSS LeadLag Injection
(Requires PSS SW)
Neg. peak value
Pos. peak value
Scaling from 0.1% to 1.0%
PSS External Input
(Requires PSS SW)
-25% U
M
+25% U
M
Range symmetrically
adjustable