Low current noise cutoff Confirmation.
Pressing “
Up” key set displayed value and
will advance to Assignment of Pulsed output to Import or
Export Energy menu. (See section 3.2.10)
pressing the “
Down” key will re-enter the “Low current
Noise cutoff Edit” mode.
SysV
SysA
Hz
x1000
kWh
x1000
x1000
3.2.10. Assignment of pulsed output to Import or Export Energy
This screen allows the user to assign pulse output1 and pulse output2 to Import or Export energy and vice versa.
Pressing “
Up” key accepts the present Pulsed output
and advance to measurement screens.
(see section 2).
Pressing the “
Down” key will enter the “Assignment of
pulsed output” mode and will toggle Rl1 and Rl2. Assigning
RL1 for Import energy will automatically assign RL 2 for
Export energy and vice-versa.
Assignment of Pulsed output
SysV
SysA
Hz
x1000
kWh
x1000
x1000
Assignment of pulsed output confirmation.
Pressing “
Up” key set the pulsed output2 to
Import energy and pulsed output1 to Export Energy and will
advance to measurement screens. (See section 2)
pressing the “
Down” key will re-enter the “Assignment
of Pulsed output” mode.
SysV
SysA
Hz
x1000
kWh
x1000
x1000
Caution
1.
In th e int eres t o f safe t y an d fu n cti o nali ty th is pr odu ct mu st b e ins tal le d by
a qua li fie d eng in eer, ab id in g by an y l oca l reg u lat io ns.
2.
Vo lta ge s dan ge r ou s to hum an l if e are pr ese n t at so m e o f th e te r m in al
co nn ec t io ns o f th is un it . E ns u re tha t al l su p pl ies are d e-en erg ise d b ef ore
att emp ti n g an y co nn ec t io n o r di sc onn ec t io n.
3.
T hes e pr odu ct s d o n ot hav e int ern al fus es th ere f or e ex ter n al f us es mu st
b e us ed to ens ur e sa f et y u nd er f au l t co n dit io ns.
5.1 EMC Installation Requirements
This product has been designed to meet the certification of the EU directives
when installed to a good code of practice for EMC in industrial environments,
e.g.
1.
Screened output and low signal input leads or have provision for fitting
RF suppression components, such as ferrite absorbers, line filters etc., in
the event that RF fields cause problems.
Note: It is good practice to install sensitive electronic instruments that are
performing critical functions, in EMC enclosures that protect against electrical
interference which could cause a disturbance in function.
2.
Avoid routing leads alongside cables and products that are, or could be,a
source of interference.
3.
To protect the product against permanent damage, surge transients must
be limited to 2kV pk. It is good EMC practice to suppress differential
surges to 2kV at the source. The unit has been designed to automatically
recover in the event of a high level of transients. In extreme
circumstances it may be necessary to temporarily disconnect the
auxiliary supply for a period of greater than 5 seconds to restore correct
operation.
4.
ESD precautions must be taken at all times when handling this product.
The Current inputs of these products are designed for connection in to
systems via Current Transformers only, where one side is grounded.
5.2 Case Dimension and Panel Cut Out
3.78”
96mm
FRONT DISPLAY
AREA
3.78”
96mm
3.15”
80mm
3.62”
92mm
PANEL CUTOUT
3.62”
92mm
MAX PANEL THICKNESS 0.18”,5mm
5. Installation
Mounting is by four side clamps, slide the side clamps throu gh side slot till side clamp
gets fir mly locke d in a groove (Refer fig.) Consideratio n should be given to the space
required behi nd the inst ru ment to allo w for bends in the connect ion cables.
As the front of the enclosure conforms to IP54 it is protected from water spray
from all directions, additional protection to the panel may be obtained by the
use of an optional panel gasket. The terminals at the rear of the product
should be protected from liquids.
The
should be mounted in a reasonably stable ambient
Ziegler
mfm
3420
temperature and where the operating temperature is within the range
0
-10 to 55 C . Vibration should be kept to a minimum and the product should
not be mounted where it will be subjected to excessive direct sunlight.
SLIDE IN THIS DIRECTION AND LOCK
PANEL
Ziegler mfm 3420
4. Pulse output option
The pulse output gives pulses at the rate proportional to the measured active energy kWh.
There are two options available,
1) One Pulse Output: Relay 1 can be configured either to Import Active energy or
Export Active energy.
2
The pulse divisor and pulse width (duration) can be configured. When two pulse outputs
are fitted
,
they share a common divisor value and pulse width
) Two Pulse Output: Here it is possible to assign Import Active energy either to Relay1
or Relay 2. Then accordingly Export Active energy is configured
automatically to the corresponding relay.
.
NOTE:
If system power is selected in W then default pulse rate is 1 pulse per Wh (upto 3600W).
If the system power is scaled in kW then default pulse rate is 1 pulse per kWh
(upto 3600 kW). If the system power is over 3600 kWh then pulse rate is 1 pulse per MWh.
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