Maintenance Switch And Output Switch State Port; Output Dry Contact Port - Liebert APM 150 User Manual

24 Chapter 3 Electrical Installation

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.
Position
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.
Liebert APM 150 Integrated UPS Single Module And Parallel System
Figure 3-9 Connection between BCB port and BCB
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. Connect to J9.4. The auxiliary contact
EXT_Q3 requirement for the external maintenance switch is as follows: When the switch is
open, the external bypass auxiliary contact is closed
IN_S Internal maintenance switch state. Connect to J9.4
Output switch state. Connect to J9.4. When the output switch is open, the auxiliary
EXT_OUT
contact of the output switch is open
GND Power ground
Figure 3-11 Output dry contact port
J6
AUx-N.O.
AUx-N.O.
AUx-N.O.
AUx-N.O.
BCB
BCB
J9
Description
J5
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