X4 I/O bus
X2 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 open
3
Normally closed
Table 4‑8. AC auxiliary power supply input (X1)
Pin
Function
1
L1
2
N
3
Ground
Advanced Energy
®
Thyro-PX® Power Controller
57010148-00B
Communication Controls
4‑9