Parallel Mode Installation and Configuration
Whenever FN Series UPS units are connected in parallel with the parallel communications cabling installed, the communicaitons bus
termination switched located to the right side of the cable connectors must be set as follows:
When convifuring paralleled units, set the termination resistor switch to the “on” position for the first and last paralleled UPS only. IF
two units are paralleled set the switch to “on” for units 1 & 2, for three units, set the swirches on for units 1 & 3. For four unit set
switches on the units 1 & 4 to “on”.
Never set the termination resistor switch to the “on” position for single unit installations.
Primary N+1 UPS Setup Procedure
1.
Connect UPS to utility source 208Vac or 240 Vac
2.
Turn on CB1 and CB2 on rear panel and leave the unit in bypass mode (BPS)
3.
Press and hold the “ON” and “Next Page” button simultaneously until the unit beeps twice and enters programming mode.
4.
Using the “Next Page” button, scroll down to confirm the UPS unit address is “¦d01” (Default setting)
5.
Using the “Next Page” button, scroll down to the parallel configuration “¦P01” (Default Setting, Non-Parallel)
6.
Using the “Change Setting” button, change the configuration to “¦P02” which enables parallel operation.
7.
Using the “Next Page” button scroll down to “Save” then press the “Enter” button until it beeps.
8.
The unit will then automatically exit the programming mode and will display “Off” on the front panel.
9.
Shut off CB1 and CB2
Second, Third, Fourth N+1 UPS Setup Procedure
1.
Connect UPS to utility source 208Vac or 240 Vac
2.
Turn on CB1 and CB2 on rear panel and leave the unit in bypass mode (BPS)
3.
Press and hold the “ON” and “Next Page” button simultaneously until the unit beeps twice and enters programming mode.
4.
Using the “Next Page” button, scroll down to the UPS address setting. “¦d01” (Default setting)
5.
Using the “Change Setting” button, assign the UPS address to either “¦d02”, “¦d03”, or “¦d04” depending on how many UPS
are being connected in parallel.
6.
Using the “Next Page” button, scroll down to the parallel configuration “¦P01” (Default Setting, Non-Parallel)
7.
Using the “Change Setting” button, change the configuration to “¦P02” which enables parallel operation.
8.
Using the “Next Page” button scroll down to “Save” then press the “Enter” button until it beeps.
9.
The unit will then automatically exit the programming mode and will display “Off” on the front panel.
10.
Shut off CB1 and CB2
11.
Repeat steps 1 through 10 to set up the, third, and fourth UPS in a parallel string if necessary.
12.
Set UPS Communication Bus Termination Resistor Switch to the “ON” position. See Table 1 for configuration.
Table 1.
# of UPS in Parallel
Switch Setting
1
Off
2
1st and 2nd UPS ON
3
1st and 3rd UPS ON
4
1st and 4th UPS ON
13.
Connect daisy chain (3076) bus cable to link up each UPS in parallel. See Fig 1.
14.
Connect wrap around (3077) bus cable between the first and last UPS in the parallel string. See Fig. 1
15.
Connect the UPS outputs together in parallel to load bank. See Manual for configuration
16.
Connect the UPS Inputs together in parallel to utility source. See Manual for configuration
17.
Turn on CB1 and CB2
18.
Press and hold the “ON” button until it beeps. The unit will take a few minutes to switch to inverter mode. If the following set
tings were not programmed correctly, the alarm will sound and will give and error code. (Er 27)
18
