Tunstall FlamencoIP Technical Manual page 229

Power supply unit UPS 60, Order No. 77 3400 10
Illuminated LED
Green „+24 V Power"
Yellow „Battery active"
Yellow „Battery active" and
Red „Battery low"
Red „Battery low"
for 30 s every 15 minutes
Red „Output Failure Fuse F2"
No LED
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:
•
Charge status too low.
•
Battery fuse has failed.
•
Battery not correctly connected.
•
Battery is defective.
•
Battery is too old, and must be replaced.
3. Commissioning
1. Connect input, output and battery terminal connections (refer to items 2.1 and 2.2).
2. Switch on the input voltage (115 – 230 Volt).
From now on, the connected nurse call system devices are supplied with 24 V DC.
3. The green LED "Power" is on due to the voltage at the terminal clamps.
If the red LED "Battery low" is on, the UPS function is not yet active
(Place the bridging contact x – y).
4. Now the power supply unit UPS is fully operational.
English - 4
Status
Mains mode
Battery mode +19.5
Battery low
Battery defective
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
© Tunstall GmbH, Orkotten 66, 48291 Telgte, Germany, www.tunstall.de, 00 8802 81, Rev. 7.0 (02/2017)
Product leaflets 03/2018, page 114
Output Switched contacts
voltage
+24 V DC
1
) – 24 V DC
-
-
(for 30 s every 15 min)
0 V
(NO)
3 – 5
3 – 4
3 – 2
3 – 2
-
3 – 2
and 3 – 4