User manual
Communication Connections
DB 9 Port Pinouts (Default Settings)
Contacts consist of isolated open collector circuits capable of switching up to 40 VDC 50 mA resistive load.
Table 10: DB9 Port Pinouts
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
1
The unit will operate on AC line at input voltages of 280 V to 524 V (at the default parameter settings).
2
For models with a standard battery charger.
3
At 75% resistive load, batteries at full charge.
Pin Function
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.
2 RS232 TD: The UNITY/I transmits data at the programmed baud rate (default is 1200
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.)
22
E
N
G
L
I
S
H
Model Number UT3K UT4K UT5K UT8K
Nominal AC Input
Voltage
1
380, 400, 415
AC Input Current
2
380 V Input
400 V input
415 V input
9.1 amps
8.6 amps
8.3 amps
12 amps
11 amps
11 amps
15 amps
14 amps
13 amps
24 amps
23 amps
22 amps
Efficiency on AC
Line
3
92%
Maximum Heat
Output (on AC Line)
891 BTU/hour
0.260 kW/hour
1186 BTU/hour
0.347 kW/hour
1485 BTU/hour
0.434 kW/hour
2377 BTU/hour
0.695 kW/hour
Weight with Batteries 242 lbs.
110 kgs.
322 lbs
146 kgs.
337 lbs.
153 kgs.
546 lbs.
248 kgs.