X4 I/O bus
X3 24 V auxiliary power supply input
X21 Fault relay K1
X22 Limit relay K2
X23 Optional relay K3
X1 AC auxiliary power supply input
Figure 4‑5. Bottom I/O connectors
Table 4‑7. Relay K1, K2, and K3 connectors (X21, X22, X23)
Pin Function
1 Common
2 Normally closed
3 Normally open
Table 4‑8. AC auxiliary power supply input (X1)
Pin Function
1 L1
2 N
3 Ground
Advanced Energy
®
Thyro-PX
®
Power Controller
57010148-00G Communication Controls 4‑9