Maintenance Switch And Output Switch State Port; Output Dry Contact Port - Emerson Liebert APM 90 User Manual

The connection between the BCB port and the BCB is shown in Figure 3-9.

3.2.4 Maintenance Switch And Output Switch State Port

J9 is the maintenance switch and output switch state port. The port is shown in Figure 3-10 and described in
Table 3-5.
Port
J9.1
J9.2
J9.3
J9.4

3.2.5 Output Dry Contact Port

J5 is the output dry contact port, providing two relay output dry contact signals. The port is shown in
Figure 3-11 and described in Table 3-6. The shunt trip coil of the external air breaker can be driven directly
through this dry contact. The shunt trip coil of the external air breaker should be 250Vac/5A or 24Vdc/5A.
J6
Figure 3-9 Connection between BCB port and BCB
J9
Figure 3-10 Maintenance switch and output switch state port
Table 3-5 Description of maintenance switch and output switch state port
Name
External maintenance switch state. The auxiliary contact requirement of the
EXT_Q3 external maintenance switch: Auxiliary contact of external bypass closed upon
switch open; open when shorted with J9.4
Internal maintenance switch state. The auxiliary contact requirement of the
IN_S internal maintenance switch: Auxiliary contact of external bypass opened upon
switch open; closed when shorted with J9.4
Internal output switch state. The auxiliary contact requirement of the output
EXT_OUT switch: Auxiliary contact of output switch opened upon output switch open; closed
when shorted with J9.4
GND Power ground
J5
Figure 3-11 Output dry contact port
Liebert APM 90 Integrated Modular UPS User Manual
Chapter 3 Electrical Installation
AUx-N.O. AUx-N.O.
AUx-N.O. AUx-N.O.
BCB BCB
Description
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