1019567 REV. 03 45
1. Solenoid Valve (SV) - directs the air flow of the pneumatic system as follows:
• The Controller board energizes the SV with 24 VDC control signal
• Air flows to the top of the Air Cylinder to lower the horn
• At the end of Hold Time, the Controller board shuts off the 24 VDC to de-energize the SV
• Air flows to the bottom of the Air Cylinder to raise the horn
2. Air Cylinder - lowers and raises the horn.
3. Pressure Regulator -provides working air pressure for the pneumatic system.
4. Pressure Gauge - indicates the current Pressure Regulator setting.
5. Down Speed Control Valve - controls the descent speed of the horn.
3.3.5 Pneumatic Sequence of Operations
The 2000 IW/IW+ pneumatic sequence follows:
1. When you press both START SWITCHES simultaneously, the Controller board energizes the SV
with a 24 VDC control signal. The SV directs air flow to the top of the Air Cylinder.
2. The horn lowers to the workpiece. (The Down Speed Control Valve controls the horn DOWN
SPEED by restricting air flow from bottom of the Air Cylinder).
3. The Controller board shuts off the 24 VDC to de-energize the SV. The SV directs air flow through
the Down Speed Control Valve to the bottom of the Air Cylinder to raise the horn at a fixed speed.
4. When the horn reaches the home position, the Upper Limit Switch (ULS) sends a signal to the
Controller module.
3.3.6 Pneumatic System Part Numbers
NOTICE
If an electrical failure occurs, the SV de-energizes and the horn
retracts to the home position.
Table 3.3 Pneumatic System Part Numbers
Component Part Number
Air Filter 200-163-009
Air Cylinder*
2.5 in. x 4 in. 100-246-576
3 in. x 4 in. 100-246-573
Connector, 1/4 in. NPT 200-029-590
Down Speed Control Valve 100-246-693
Pressure Gauge 100-246-691
Pressure Regulator 100-246-692
Solenoid Valve (SV), MAC, (blue) 100-246-694
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