4. Operation of ELC
page 24
ELC PE22B-PE35B V1.0-05.19-GB
Subject to technical alterations
recommended to choose the maximum lamp power for
[Power Set Value]
during the lamp warm-
up period.
To ignite the lamp set the
{Start Lamp}
-Bit in register
[Lamp Control]
to 1.
{n/a}
: not available. These bits are reserved for future applications.
After switching on the ELC take account of the charge time given in chapter 6,
before starting the lamp.
In case of an error the ELC will not try to ignite the lamp. After eliminating the
error the
[Error Register]
has to be cleared additionally (see paragraph 5.4).
As long as the safety circuits are not activated the ELC will not try to ignite the
lamp (see paragraph 5.3).
During warm-up the lamp power stays at a very low level over a longer period of time and after
approximately 60 seconds rapidly increases to its nominal power. The lamp is operated with
increased current until the nominal power is reached.
The actual condition of the lamp may
be read out from register
[Lamp Status]
of the PROFIBUS-input-data:
PROFIBUS-input-data (ELC
→
Master)
Byte-
No.
0 1 2 3
4
5
6
7
8
9
10 11 12 13 14
15
Name
[ELC
Serial
Number]
[Software
Version]
[ELC
Nominal
Power]
[Error
Register]
[Warning
Register]
[Lamp
Status]
[Actual
Power]
[Actual
Voltage]
[Actual
Current]
[Reserved]
↓
Bit
7
6
5
4
3
2
1
0
Name
n/a n/a n/a n/a n/a
Lamp
Ignition
Run
Up
Lamp
On
Bits in use in register
[Lamp Status]
:
Bit 2
{Lamp Ignition}:
during the ignition phase of the lamp the
”ignition“ b
it is set (value = 1,
otherwise 0).
Bit 1
{Run Up}:
during warm-up of the lamp
the “r
un-u
p“
-bit is set (value = 1, otherwise 0).
Bit 0
{Lamp On}:
as soon as the lamp has reached the required power and lamp voltage is in a
steady state, the
”lamp
-
on“
-bit will be set (value = 1, otherwise 0).
