SMC Networks System 5000 - Manual (Page 17)

April 17, 2000 Man ual Versio n 1.0
3.4
Figure 3.4: Type “C” Valve Configuration
Figure 3.5: Typical Counterbalance System
Type “C” An integrated Fill/Dump valve with a manual regulator, check valve, and LOX valve, and
a four-way valve that selects whether the pressure is set by the automatic system or the
manual regulator as shown in Figure 3.4 for cushion and counterbalance adjustment.
Unlike the type “B” valve, the manual regulator can be set to any allowable pressure
without interfering with automatic pressure adjustment- it does not have to be a minimum
pressure. This system is ideal for press counterbalance systems as the manual regulator
can be set to balance the heaviest die used on the press. When the OmniLink 5000
control is powered off, the valve automatically reverts to at least the pressure set by the
manual regulator. If there is an air leak in the counterbalance system, the manual
regulator keeps the system charged to support the weight of the die.
Section 3.3 Counterbalance Control Installation
The automatic counterbalance control system consists of an air control module mounted on the ASM, a
control valve (or valves) , and a pressure transducer. The typical manually controlled press
counterbalance system looks something like Figure 3.5.