Output Dry Contacts, Output dry contact relays

Electrical Connections

2.3.4Output Dry Contacts

There are three output dry contact relays at the X1 slot (see Figure 10 and Table 4).

Figure 10 Output dry contacts and EPO wiring for firmware before M170

+12V

X1	J13			J21
	J13			J21
BFP C	BFP S	BFP O	INV C	INV S	INV O

Table 4 Output dry contact relays

	J25
ACF C	ACF S	ACF O

J28

EPO-H EPO-L

Position	Name	Description

J13.2	BFP_O	Bypass feedback protection relay. Normally open. Closed when bypass SCR is shorted.

J13.3	BFP_S	Bypass feedback protection relay center

J13.4	BFP_C	Bypass feedback protection relay. Normally closed. Open when bypass SCR is shorted.

J21.2	INV_O	Inverter mode relay. Normally open. Closed when UPS is in inverter mode.

J21.3	INV_S	Inverter mode relay center

J21.4	INV_C	Inverter mode relay. Normally closed. Open when UPS is in inverter mode.

J25.2	ACF_O	Main input fault relay. Normally open. Closed when main input is in fault.

J25.3	ACF_S	Main input fault relay center

J25.4	ACF_C	Main input fault relay. Normally closed. Open when main input is in fault.

NOTE

All auxiliary cables of terminal must be double-insulated. Wire should be 20-16AWG stranded for maximum runs between 82 and 164 feet (25-50m), respectively.

2.3.5EPO Input—Optional

Firmware Before M200

The UPS has an Emergency Power Off (EPO) function that operates by a button on the control panel or by a remote contact provided by the user. The EPO button is under a hinged, clear plastic shield.

The X2 slot, shown in Figure 10, is the remote EPO input interface. It is active when shorted from EPO-L to EPO-H.

If an external Emergency Stop facility is required, it is connected terminals EPO-L to EPO-H of the auxiliary terminal block (X2). It also is connected to the Normally Open remote stop switch between these two terminals using shielded cable (see Figure 10 and Table 5). If this function is not used, terminals EPO-L to EPO-H must be opened.

Table 5 EPO input contact relays

Position	Name	Description

J28.2	EPO_L	Emergency Power Off Low
J28.4	EPO_H	Emergency Power Off High

NOTE

The Emergency Stop action within the UPS shuts down the rectifier, inverter and static bypass. It does not internally disconnect the input power supply.

To disconnect ALL power to the UPS, open the upstream feeder breaker(s) when the remote EPO is activated.

10-30kVA, 208V specifications

The Emerson 10-30 kVA, 208V uninterruptible power supply (UPS) solution is a robust system designed to provide reliable power protection for critical applications in commercial and industrial settings. This UPS is ideal for safeguarding IT equipment, communication systems, and other sensitive electronics against power disturbances and interruptions.

One of the standout features of the Emerson 10-30 kVA UPS is its modular design, allowing for flexibility and scalability. This means that as the power needs of a facility grow, the UPS can be easily expanded without requiring a complete system overhaul. This modularity contributes to a more efficient use of resources and minimizes operational costs.

The UPS also incorporates advanced technologies such as double-conversion online architecture, which provides the highest level of power quality. This technology ensures that the output power is consistently clean and stable, effectively eliminating harmful voltage fluctuations and frequency variations. Consequently, connected load receives a pure sine wave output, preventing potential damage or operational issues with sensitive equipment.

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The user-friendly interface enhances operability, featuring an intuitive LCD display that allows for easy monitoring of critical power parameters. Users can access real-time data related to battery health, load levels, and operational status, which aids in effective management of the power supply.

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In summary, the Emerson 10-30 kVA, 208V UPS offers a combination of modularity, high efficiency, advanced technologies, and effective power management features that cater to the demanding needs of critical applications. With its reliable performance and user-friendly operation, this UPS solution is an excellent choice for organizations looking to protect their valuable equipment from power disturbances.

Emerson 208V, 10-30kVA Output Dry Contacts, EPO Input-Optional Firmware Before M200

Models: 10-30kVA 208V