Fronius CU 1100i, Operating Instructions Manual

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Options
OPT/i CU flow
temperature
sensor This option is available for the following devices:
-
CU 800i
- CU 800i /460 V
- CU 800i Pro
The OPT/i CU flow temperature sensor option offers monitoring of the coolant temperat-
ure and flow rate.
Coolant temperature monitoring and flow monitoring are parts of an installation set and
cannot be ordered separately.
The CU 1100i, CU 1100i /460V, CU 1100i /MV, CU 1100i / MV RVP, CU 1200i Pro /MC
and CU 1400i Pro /MC cooling units have this option installed as standard.
Coolant temperature monitoring
A temperature sensor monitors the coolant return temperature during welding.
How it works:
-
If the temperature of the coolant reaches 68 °C (154.4 °F)
-
The power source outputs a warning
- The welding current is not interrupted
- The cooling unit remains operational
- If the temperature of the coolant exceeds 70 °C (158 °F)
-
The power source outputs an error message
- The temperature sensor interrupts the welding current
- The cooling unit remains operational
- The temperature sensor restores the welding current when the coolant temperat-
ure falls to 65 °C (149 °F)
Flow monitoring
A flow sensor monitors the coolant flow during welding.
How it works:
-
If the coolant flow falls to between 1 and 0.7 l/min (0.26 - 0.18 gal./min [US])
-
The power source outputs a warning
- The welding current is not interrupted
- The cooling unit remains operational
- If the coolant flow drops below 0.7 l/min (0.18 gal./min [US])
-
The power source outputs an error message
- Flow monitoring interrupts the welding current
- The cooling unit remains operational
- If the coolant flow drops below 0.4 l/min (0.11 gal./min [US])
-
The power source outputs an error message
- Flow monitoring interrupts the welding current
- The cooling unit is switched off
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