Flamenco Technical Manual Revision 6.0 - Tunstall.de

Power supply unit UPS 60, Order No. 77 3400 10
2.3 Control terminal clamps x + y
The control terminal clamps "x" and "y" are used to prepare the unit for the uninterrupted power supply
(UPS mode).
2.3.1 Preparing the UPS function by placing a bridge contact between "x" and "y"
• Connect the control terminal clamps "x" and "y" using the enclosed bridging contact or via a
potential-free 'make contact'. The current for the bridging contact is approx. 1 mA..
2.3.2 LED and indicator outputs 1 - 5
The five indicator outputs 1 – 5 at the 7-pole terminal block indicate the status of the unit via potentialfree
relay contacts. The current load for these contacts is up to 125 V / 1.5 A / 60 VA.
Illuminated LED Status Output
voltage
Switched contacts
(NO)
Green „+24 V Power“ Mains mode +24 V DC 3 – 5
Yellow „Battery active“ Battery mode +19.5 1 ) – 24 V DC 3 – 4
Yellow „Battery active“ and
Red „Battery low“
Red „Battery low“
for 30 s every 15 minutes
Battery low - 3 – 2
Battery defective - 3 – 2
(for 30 s every 15 min)
Red „Output Failure Fuse F2“
No LED
Fault F2
Output fuse F2 was
removed or it is
defective.
Power supply unit
is off and battery is
low or UPS function
is not prepared
0 V -
3 – 2
and 3 – 5
1 ) When the output voltage has dropped to approx. 19.5 V, the power supply unit will shut off
(protection against totally flat battery).
2.3.3 Battery test
The unit features an automatic battery load test. For this, the connected batteries' status is checked at
regular intervals (approx. 15 minutes).
This takes place by voltage measuring while simultaneously demanding a defined load current for a
period of approx. 30 sec.
If during this test the battery voltage should drop below approx. 21.5 V, the indicating contact (3 – 2)
"Battery low" is reversed and this shows that the battery capacity will not sustain a UPS operating
mode.
This warning will be indicated for the said test period of approx. 30 sec. or until the battery voltage has
been increased to approx. 23 V. This may also take place when the battery voltage rises during a
recharging process after previous discharging, e.g. in the course of UPS operation.
This warning message is reset after the test phase and will be reactivated again during the next
battery load test. This is the reason for the cyclic indication of the battery fault as described above.
The battery load test is an effective instrument for checking the true battery state. A negative result,
i.e. a warning message is issued, may be caused by one or more of the following :
© Tunstall GmbH, Orkotten 66, 48291 Telgte, Germany, www.tunstall.de, 00 8802 81, Rev. 3.0 (05/2012) English - 3
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