4.2.3 Dry contact port X6 J22
The schematic diagram of dry contact port J22 is shown in Figure 4.7 below and described in Table 4.6 below.
Figure 4.7 Dry Contact Port J22
Port Pin Name Meanings
Bypass Backfeed
J22-1 BFP_O Normally open. Closed when bypass has backfeed.
J22-3 BFP_S Bypass backfeed protection relay common.
J22-5 BFP_C Normally closed. Open when bypass has backfeed.
Bypass Drive
Power
J22-2
J22-4 24 V 24 V bypass backfeed drive power (options should be configured).
J22-6 24 V GND 24 V power ground
Table 4.6 Description of Dry Contact Port J22
44 Proprietary and Confidential ©2023 Vertiv Group Corp. 4 Electrical Installation
Vertiv™ Liebert® APM2 30 to 120 kVA Modular UPS User Manual
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