Commissioning (initial start-up)
Operating Manual EM-PQ 2300
23
6. Commissioning (initial start-up)
6.1 Safety precautions before start-up
DANGER!
To avoid accidents, the following must be observed:
Before start-up, it must be ensured, for example by means of a closed door or a suitable cover,
that the instrument terminals can no longer be touched.
If the instrument terminals and connecting cables remain exposed during operation, there is a risk
of live components being touched inadvertently. The working voltage may present a hazard to
health or may even be life-threatening if this happens.
Observing the above safety precautions can significantly reduce the risk to life and limb.
After all installation work has been carried out as described in
Section 5, Installation, page 12
, and the above
safety precautions have been taken, the power supply may be switched on and the EM-PQ 2300 started up
6.2 Functional checkout
When the power is switched on, the
Run
LED lights up. After about 20 seconds, the EM-PQ 2300 is ready to
operate and the
Run
LED starts flashing at 1-second intervals.
If an EM-FD 2500 Display instrument is connected, a red LED located on the base near the Display connector
serves as an overcurrent annunciator. If it lights up or flashes, the current to the EM-FD 2500 is too high. This will
not damage the EM-PQ 2300, but short-circuiting the Display connections can restart the EM-PQ 2300 repeatedly
in a 2.5-second cycle.
The cable connections to the Display should then be inspected for faults in such a case.
6.3 Configuration switches (DIP switches)
The DIP switches on the EM-PQ 2300 are used to make basic
settings.
The DIP switches are located on the top left of the instrument
near the terminals.
Switch 1 is nearest to the middle of the instrument.
ON
position: The white rocker is pressed down.
OFF
position: The white rocker is pulled up.
Figure 9: Configuration switches (DIP switches)
6.3.1 Functions of the DIP switches
CAUTION!
Incorrect network settings can cause network errors.
Switch
Function
OFF
ON
1
Display bus terminating resistor Terminating resistor deactivated Terminating resistor activated
2
DHCP
Switched off
Switched on
3
Network IP address
As per configuration
Fixed as in table below
4 & 5
Mode of the RS-485 interface
See below
See below
6
Not assigned
-
-
