NFS2-640 UL Listing Document — P/N 52741LD:H9 5/19/2022 7
Terminal Block/
Connector
Description Specifications
TB1 AC Power3
• Voltage and current:
CPU2-640/C: 120 VAC 5.0 A
CPU2-640E: 240 VAC 2.5 A
• Frequency: 50/60 Hz
• Wiring size: Maximum 12 AWG (3.31 mm2) with 600 VAC insulation
• Supervised
• Non-power-limited
TB2 Power Auxiliary Outputs
• Voltage: 24 VDC power at 0.5A
5 VDC power at 0.15A (See Note 1 and 10)
• Power-limited (Class 2)
• Maximum Ripple: 176 mVrms
• Class B wiring. Supervise with a power supervision relay EOLR-1
• Ground Fault Impedance: 0 ohms
• Supervised
TB3 Battery Connection
• Voltage:24 VDC
• Battery type: Sealed lead-acid
• Maximum Battery Capacity: 200 AH
• Non-power-limited
• Over-current protected
• Battery Charger Voltage: 27.6 VDC +/- 0.24 VDC
• Battery Charger Current: 2.0 A or 5.7 A (Software selectable)
• Supervised
Table 2 NFS2-640Power Supply Wiring Connections (1 of 2)
Figure 10 Power-Supply Wiring Connections
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