Communication Connections
E
N
DB 9 Port Pinouts (Default Settings)
G
Contacts consist of isolated open collector circuits capable of switching up to 40 VDC 50 mA resistive load.
L
Table 10: DB9 Port Pinouts
I
S
Pin
Function
H
1
RS232 RD: The UNITY/I receives data at the programmed baud rate (default is 1200
baud), 8 bits, no parity, 1 stop bit, and no handshaking.
RS232 TD: The UNITY/I transmits data at the programmed baud rate (default is 1200
2
baud), 8 bits, no parity, 1 stop bit, and no handshaking.
3
Inverter Normally Open Contact: Closes to indicate that the UPS is on battery power
(programmable contact 1).
4
Common: Signal ground for all interface signals and contacts.
5
Low Runtime Normally Open Contact: Closes to indicate that battery runtime is low
(programmable contact 0).
6
Inverter Normally Closed Contact: Opens to indicate that the UPS is on battery
power (programmable contact 2).
7
Remote Emergency Power Off: Short to ground to turn the UPS off. Apply +12
VDC to turn the UPS back on or connect to Pin 8 (current limited).
8
Unregulated +18 VDC Nominal Source: An unregulated +18 VDC nominal source
protected by a 1000 ohm source impedance.
9
Internal Bypass Normally Open: Closes to indicate that the UPS is in internal bypass
mode. ( Note: Does not close for the A-16 condition that occurs after a low battery
shutdown. See Section 204.)
Specifications: Models with Optional 380/400/415 VAC Input
Specifications for models with optional 380/400/415 VAC input are the same as for standard models except for the fol-
lowing:
Table 11: Specifications for Models with Optional 380/400/415 VAC Input
Model Number
Nominal AC Input
AC Input Current
Efficiency on AC
Maximum Heat
Output (on AC Line)
Weight with Batteries
1
2
3
UT3K
Voltage
1
2
9.1 amps
380 V Input
8.6 amps
400 V input
8.3 amps
415 V input
Line
3
891 BTU/hour
0.260 kW/hour
242 lbs.
110 kgs.
The unit will operate on AC line at input voltages of 280 V to 524 V (at the default parameter settings).
For models with a standard battery charger.
At 75% resistive load, batteries at full charge.
UT4K
UT5K
380, 400, 415
12 amps
15 amps
11 amps
14 amps
11 amps
13 amps
92%
1186 BTU/hour
1485 BTU/hour
0.347 kW/hour
0.434 kW/hour
322 lbs
337 lbs.
146 kgs.
153 kgs.
22
UT8K
24 amps
23 amps
22 amps
2377 BTU/hour
0.695 kW/hour
546 lbs.
248 kgs.