ABB C1900 Operating Instructions Manual page 5

Tank RTD Sensor
Milking
Return Flowline
System
RTD Sensor
C1900 Connections
A – Analog input connection from tank RTD sensor
B – Analog input connection from return flowline RTD sensor
C – Digital input connection from refrigeration power (refrigeration ON signal)
D – Digital input connection from milking system power (milking system) ON signal
E – Warning light output
Bulk Storage Tank
White
Red
Barn Warning Lights
Fig. 1.1 Dairy Farm Milking System
1 INTRODUCTION
Refrigeration Unit
C1900
C
A
D
B
E
Red
Residence Warning Lights
Refrigeration
System
Power Supply
Milking System
Power Supply
White
(Optional)
3