Powerware FE/QFE UPS manual Communication Port

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Communication Port

The communication port cable pins are identified in Figure 9 and the pin functions are described in Table 5.

Figure 9. Communication Port

Table 5. Communication Port Pin Functions

o e e

2Transmit Data (in)

3Receive Data (out)

4	Request to Send	To enable hardware handshaking on these pins, call your service
		representative.
5	Clear to Send
6	+12V Level (0.01A) when the UPS is operating
7	Signal Ground
11	Contact opens when on	These relay contacts are rated at 25 Vac/Vdc and 250 mA (see “Remote
	inverter	Monitoring” on page 47).
		NOTEFE 500 VA–3.1 kVA models with serial numbers 25000 and greater have
12	Contact closes when on
	inverter	equivalently rated DC solid state switches.

13Common Inverter Signal Contact

14+12V, 0.5A (500 VA–3.1 kVA) or 0.3A (4.3–18 kVA) Do not use for setting logic levels.

18+12V Level (0.01A) when UPS is operating

20AS/400 Option

21Remote Shutdown

23	Contact closes on alarm	These relay contacts are rated at 25 Vac/Vdc and 250 mA (see “Remote
		Monitoring” on page 47).
24	Common Alarm Signal Contact
		Pins 23 and 25 change status when the UPS is turned off.
		NOTEFE 500 VA–3.1 kVA models with serial numbers 25000 and greater have
NOTE25	Contact opens on alarm
		equivalently rated DC solid state switches.

Pins 2–5 and 7 are for RS-232 communication, Pins 11–13 and 23–25 are for remote monitoring, and Pin 21 (used with 6 or 18) is for remote shutdown. The following sections describe how to take advantage of these features. Pin 20 is for option use only.

40 Powerware® FERRUPS FE/QFE UPS (500 VA–18 kVA) User’s Guide : Rev A www.powerware.com