4.7.2
Control Terminals Description
Digital inputs
Termi‐
nal
Signal function
Description
Signal requirement
X1
Pump enable
Enabled: the pump can
be driven by the fre‐
quency converter
Disabled: the pump has
no action
Inputs via opto-electric cou‐
plers:
24 VDC, 8 mA / 12 VDC, 4
mA
Pulse input: Max. 50.0 kHz
X2
Error reset
–
X3...X5
Multi-function
digital inputs
See Group E1 in EFC
documentation
EX1...
EX5
Multi-function digi‐
tal input on exten‐
sion card
SC
Shared connection
Shared connection for
isolation opto-electric
couplers
–
+24 V Power supply for
digital inputs
COM is reference
Isolated from GND
Max. output current: 100
mA
COM
Analog inputs
Termi‐
nal
Signal function
Description
Signal requirement
+10 V Power supply for
analog inputs
GND is reference
Max. output current: 30 mA
+5 V
Max. output current: 10 mA
AI1
Analog voltage in‐
put 1/
Analog current in‐
put 1
AI1 in DRn 5020 has no
function defined
Voltage input range:
0/2...10 V
Input impedance: 40 kΩ
Resolution: 1/1,000
Current input range:
0/4...20 mA
Input impedance: 500 Ω
Resolution: 1/1,000
AI2
Analog voltage in‐
put 2/
Analog current in‐
put 2
AI2 in DRn 5020 has
been set as "pressure
feedback", F2.01 = 2
EAI
Analog input on
extension card
EAI in DRn 5020 has no
function defined
GND
Shared connection Isolated from COM
–
Shielding connec‐
tion
Connected with ground‐
ing terminals on heat‐
sink internally
–
Bosch Rexroth AG
DOK-SYTROX-DRN5020****-IT05-EN-P
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Frequency-Controlled Pump Drive System Sytronix DRn 5020
About This Product