Design and function
© Festo Didactic • MPS
®
PA Compact Workstation
21
The overflow at tank B101 is monitored with float switch S111 (1). If the level in the
tank exceeds the maximum level the transparent float cylinder is pushed upward.
Inside the float cylinder are magnets which activate a reed contact.
1
Level monitoring with float switch for overflow savety S111
The binary 24 V input signals (no) is connected to the I/O-terminal XMA1. The signal
of the overflow switch should activate a alarm function in the PLC-program and has
effect on ball valve V102 and pump P101.
If changed electrically the overflow switch also can be used to turn off the pump or
valve with a relay circuit or for signal indication to a emergency relay.
Overflow savety
Summary of Contents for MPS PA Compact
Page 1: ...MPS PA Compact Workstation EN 12 08 Process automation MPS PA Compact Workstation Manual ...
Page 10: ...Introduction 10 Festo Didactic MPS PA Compact Workstation ...
Page 14: ...Technical data 14 Festo Didactic MPS PA Compact Workstation ...
Page 16: ...Transport Unpacking Scope of delivery 16 Festo Didactic MPS PA Compact Workstation ...
Page 68: ...Commissioning 68 Festo Didactic MPS PA Compact Workstation ...
Page 70: ...Maintenance 70 Festo Didactic MPS PA Compact Workstation ...