System description
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03
1-11
1.3 Application example
Description
The fill level of a liquid container is being monitored. A pump keeps the
liquid level (reference value) almost constant by pumping more liquid into
the container. The fill level (actual value) is measured by the fill level
indicator and output as an analog signal. When the fill level sinks below a
specific level, the pump is switched on by SIMOCODE pro. Liquid is
pumped in until the reference value is re-attained. The pump is then
switched off.
Controlling the pump
The pump can be controlled as follows:
• Locally: Local control station [LC] for manual switching on and off (by visual
contact)
• LC in the switchgear cabinet door: Control station operator panel [OP] for
switching on and off manually
• At automation level: Control station PLC/PCS [DP] for remote-controlled
switching on and off (automatic operation) via PROFIBUS DP
• Via SIMOCODE pro: Via local mode fill-level monitoring and/or limit value
monitoring.
Schematic
Fig. 1-5: Schematic of a typical application example
3/N/PE ~ 50/60 Hz 400/230 V
L1
L2
L3
N
PE
Q1
- Q1
135
246
135
M
3~
PE
WVU
246
System
interface
Current measuring
module (IM)
Pump
L1/L+
F11
Q1
N/L–
Connecting cable
S0
S1
A2 A1
T1 T2
Analog module
In+
In–
Out+
Out–
Fill-level indicator
T1
T2
PLC/PCS
PROFIBUS DP
Thermistor
Liquid container
Control station
PLC/PCS [DP]
Control station
Operator panel
Optional:
Laptop with
SIMOCODE ES
Display
Basic unit (BU 2)
Motor current
IN1 IN2 24 V
OUT 1
1
L+
L–
(AM)
Ï‘
(Unit: % of I
s
)
Control station
Local control station [LC]
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