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Power supply unit UPS, Order No. 77 3400 00<br />
2.3.1 Preparing the UPS function by placing a bridge contact between "x" and "y"<br />
• Connect the control terminal clamps "x" and "y" using the enclosed bridging contact or via a<br />
potential-free 'make contact'. The current for the bridging contact is approx. 1 mA..<br />
2.3.2 LED and indicator outputs 1 - 5<br />
The five indicator outputs 1 – 5 at the 7-pole terminal block indicate the status of the unit via potentialfree<br />
solenoid contacts. The current load for these contacts is up to 125 V / 1.5 A / 60 VA.<br />
2.3.2.1 Green LED "Power" (mains supply mode and bridging contact between "x" and "y"<br />
closed)<br />
Only green LED "Power“ is on.<br />
Contacts 3 – 1 & 3 - 5 are closed.<br />
2.3.2.2 Amber LED "Battery active"<br />
Only amber LED "Battery active“ is on.<br />
Contacts 3 – 1 & 3 – 4 are closed.<br />
2.3.2.3 Red LED "Battery low"<br />
During mains failure<br />
Only amber LED "Battery active“ is on.<br />
Contacts 3 – 1 & 3 – 4 are closed.<br />
Amber LED "Battery active“ and red LED "Battery<br />
low“ are on.<br />
Contacts 3 – 2 & 3 – 4 are closed.<br />
All LEDs are off.<br />
Contacts 3 – 2 & 3 – 5 are closed.<br />
24 V voltage is available at the terminal clamp.<br />
Battery mode<br />
(when bridging contact between "x" and "y" is<br />
closed)<br />
The 24 V voltage at the terminal clamp is from the<br />
battery.<br />
The voltage at the terminal clamps depends on<br />
the relevant battery charge state.<br />
When the output voltage has dropped to<br />
approx. 19.5 V, the power supply unit will shut off<br />
(protection against totally flat battery)<br />
After the input voltage (115 - 230 Volt) has been reactivated again, the output clamps will be supplied<br />
with 24 V DC, and the batteries will be recharged automatically.<br />
2.3.2.4 Red LED "Output Failure Fuse F2" defective<br />
Green LED "Power“ and red LED "Output Failure<br />
Fuse F2" are on<br />
2.3.4 Battery test<br />
Green LED "Power“ is on and red LED "Battery<br />
low“ illuminates for 30 seconds every 15 minutes.<br />
Contact 3 – 2 is closed for 30 seconds every 15<br />
minutes.<br />
Output fuse F2 was removed or it is defective. No<br />
output voltage at the power supply terminal<br />
clamps.<br />
Battery capacity not sufficient for safe UPS<br />
operation.<br />
Batteries are automatically checked every 15<br />
minutes. If a battery fault is detected during this<br />
test, the indicating contact and the LED "Battery<br />
low" are activated for the approx. 30 sec. test<br />
period.<br />
The unit features an automatic battery load test. For this, the internal batteries' status is checked at<br />
regular intervals (approx. 15 minutes).<br />
This takes place by voltage measuring while simultaneously demanding a defined load current for a<br />
period of approx. 30 sec.<br />
© <strong>Tunstall</strong> <strong>GmbH</strong>, Orkotten 66, 48291 Telgte, Germany, www.tunstall.de, 00 8802 41, Rev. 3.1 (05/2008) English - 3<br />
<strong>Technical</strong> <strong>Manual</strong> Page 136
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