Description
Product Specification IRB 6600 M2000 55
Water return circuit
The water return circuit monitors the flow of the returning cooling water from the Spot
welding gun. The flow switch detects if the water flow is too low in the cooling water
circuit.
The flow switch gives a digital signal to the robot control system, which automatically
shuts the electrical shut off valve in the water in circuit off if the flow is too low. The
system and the supply of cooling water are then automatically stopped to minimise any
risk of damage to the system.
The water return circuit is delivered with a pre-set flow limit, set to approx. 3,5 litres
per minute.
The water return circuit started from right with a Parker Pushlock adapter (Suitable for
a Parker Puchlock DIN 20 078 A, we recommend a Parker Pushlock 39C82-15-8BK
fitting), flowswitch with a switching point between 2-12 litres per minute.
It’s also equipped with a flow control valve; the flow control can adjust the water flow
to a wanted flow level. The flow-value can be monitored through a small window on
the flow control valve. This will serve as a rough function check in the approximate
flow range of 2-8 litres per minute. The circuit end’s with a check-valve that will stop
any reversing water flow, manual shut off valve and an Parker Puchlock 33482-8-8BK
fitting for ½” hose (hose assembled by customer). From this point the water is led to
the factory water system.
Air supply circuit
The air supply circuit provides the robot and option: proportional valve with air supply.
The air supply circuit started with a Parker Puchlock 39C82-15-8BK fitting (hose
assembled by customer). Manually operated shut off valve to vent the system through
a silencer, air filter 25 microns and a water separator equipped with a metal bowl
protection, distribution block containing plugged air outlet ports.
The air supply circuit ends with a Parker Pushlock adapter. (Suitable for a Parker
Puchlock DIN 20 078 A, we recommend a Parker Pushlock 39C82-15-8BK fitting).
Maximum flow capacity is 3000 litres per minute at 6.3 bar and P = 1.0 bar. Maximum
allowed pressure is 16 bar.
Split box
With the split box, the 24VDC supply and signals are connected and distributed to the
different units on the water and air unit, see picture below. The design makes discon-
nection of separate items for service and repair on the water and air unit very easy. The
split box has a protection class IP68. Brand: Woodhead, Brad Harrison.
The split box has six connections prepared for the following units.
- Electric water shut off valve
- Flow switch 1
- Flow switch 2 (Option 2177 Second Water Return)
- Pressure switch (Option 2179 Pressure switch and Regulator
for air)
- Proportional valve (Option 2181 Electrical proportional valve for air)
- Spare
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