Eaton Powerware 9170+ - DB-9 Communication Port

COMMUNICATION
EATON Powerware
®
9170
+
UPS (3–18 kVA) User’s Guide S 164201393 Rev C www.powerware.com
94
DB-9 Communication Port
Table 13 explains the functions of the pins on the Powerware 9170
+
DB-9 communication port. This port is on the Powerware 9170
+
UPS
rear panel, as shown in Figure 50 on page 70.
Table 13. DB-9 Port Signals
Pin Function Description
1 Low Battery Alarm Pin 1 shifts from RS-232 Low (positive voltage) to RS-232 High (negative voltage) and
remains high whenever the UPS enters a Low Battery alarm state.
2 RS-232 Transmit Data Sends outgoing RS-232 communication data at 9600 baud, 8 bits, no parity, 1 stop bit.
3 RS-232 Receive Data/
RS-232 Shutdown
RS-232 Receive Data Function. Receives incoming RS-232 communication data at
9600 baud, 8 bits, no parity, 1 stop bit.
RS-232 Shutdown Function. If Pin 3 receives an RS-232 Low signal (+Vdc) for at
least 5 seconds, but not more than 7 seconds, during an AC Failure condition, the
UPS output shuts off following a delay of 120 seconds (±5 seconds).
S The UPS output shuts off even if the normal AC input power is restored during the
120 second delay.
S The UPS output automatically restarts after the UPS determines the normal AC
input power is stable.
S The shutdown and restart timing represented by the functionality of Pin 3 is
independent from the shutdown and restart timing specified from the host
software.
4 Reserved Loopback to Pin 6
5 Common Signal Ground
6 Reserved Loopback to Pin 4
7 No Connection Open pin
8 AC Fail Signal
(On-Battery)
Pin 8 shifts from RS-232 Low (positive voltage) to RS-232 High (negative voltage) and
remains high for 15 seconds (±1 second) after the UPS detects an AC Failure
condition, assuming the condition still exists after the 15 seconds.
When the A C Failure condition no longer exists, the signal returns to the RS-232 Low
state (positive voltage).
9 No Connection/
DC Supply Voltage
The UPS is factory-set with Pin 9 disconnected, but can be enabled through a
technician-replaceable jumper inside the UPS. The jumper setting MUST be
changed by a qualified service technician.
When enabled, Pin 9 provides supply voltage for use with external connectivity
devices requiring DC power directly from the UPS DB-9 port (nominal 12 Vdc/5W;
8V minimum, 24V maximum). Use only Powerware brand connectivity devices.