Elcomponent AEM32 DIN User manual

AEM32 DIN
INSTRUCTIONS
This instrument is manufactured in compliance with
EN61010-1 Cat III for nominal operating voltages of 400V
L-L and 230V L-N, to ensure safe operation the user must
comply with the following instructions:
•Ensure that the supply voltage is correct.
•The auxiliary mains supply is internally fused at 250V,
100mA Type 2, external fusing is required if the
auxiliary supply voltage exceeds 250V.
•Maintenance and/or repairs must be carried out only
by qualified, authorised personnel.
•If there is ever the suspicion that safe use is no longer
possible, the instrument must be disconnected and
precautions must be taken against accidental use.
•Operation is no longer safe when:
1) If there is clearly visible damage
2) If the instrument no longer functions
3) After prolonged storage in unsuitable conditions.
Read these instructions carefully before installing and
utilising the instrument.
The instrument described in this user manual is intended
for use by properly trained staff only. Maintenance and/or
repairs must be carried out by authorised personnel only.
For proper, safe use of the instrument and for
maintenance and/or repair, it is essential that the persons
instructed to carry out these procedures follow normal
safety precautions.
CAUTION: Failure to follow the instructions may result
in personal injury or damage to equipment.
NOTE: Failure to follow the instructions may result
in an instrument malfunction.
3 CONNECTION DIAGRAMS
1 SAFETY
1.1 OPERATOR SAFETY
2 SYMBOLS
CAUTION: The instrument is internally fused at 250V
100mA. External fusing is required if the supply voltage
exceeds 250V.

The AEM32 is suitable for use with current transformers
(CTs) with 5A secondary output. Metering quality CTs of
Class 1 accuracy with a minimum rating of 2.5VA are
recommended.
Connections should be made according to the diagrams
above.
CAUTION:
The pulse output contacts are rated at 100mA AC/DC,
100V max. Under no circumstances should this rating be
exceeded.
The output has a telltale l.e.d. on the front panel which
flashes ‘on’ to indicate a pulse being generated.
The pulse connections are as follows:
Terminals 13 & 14
The contacts are volt free and therefore an external power
supply must be provided.
When the instrument is powered up, the display will initially
show the internal software version, then after a few
seconds will start displaying measured values. The three
buttons allow the user to scroll through the available
measurements.
ENERGY DISPLAYS
Press the button to select Total kWh or kWh Count
display pages. The kWh Count display remains visible for
1 minute before the unit reverts to Total kWh mode.
Press and together and hold for 5 seconds to
reset the kWh Count register to zero. Scaling of the
energy registers is set by the nominal input currents and
voltages and remains constant during operation of the
meter. Energy registers will accumulate from zero to
99,999,999 then restart from zero.
INSTANTANEOUS kW DISPLAY
3.1 CONNECTION OF THE CURRENT INPUT
Press to select the following display:
The instantaneous power display may show negative values
indicating export power or incorrectly wired inputs. REV CT
will also be show indicating that the most likely cause of the
negative reading is one or more current transformers fitted the
wrong way round on the primary conductor.
3.2 PULSE OUTPUT CONNECTIONS
5 PROGRAMMING
CT SET-UP
The instrument must be set up for the CTs to which it is
connected. This need only be done once, after which the
setting is maintained in memory for the life of the unit
regardless of whether it is powered up or not.
To enter programming mode press and
simultaneously for 5 seconds. The unit shows the CT primary
settings screen.
The CT primary value may then be set from the following
nominal values (secondary value must be 5A):
4 INSTRUMENT OPERATION
5, 10, 15, 20, 30, 40, 50, 60, 80, 100, 150, 200, 250, 300, 400,
500, 600, 800, 1000, 1200, 1250, 1500, 1600, 2000, 2400,
3000, 2500, 4000, 4500, 5000, 5500, 6000, 6500, 7000, 7500,
8000, 8500, 9000, 9500, 10000, 10500, 11000, 11500, 12000,
12500, 13000, 13500, 14000, 14500, 15000, 15500, 16000,
16500, 17000, 17500, 18000, 18500, 19000, 19500, 2000,
205000, 21000, 21500, 22500, 23000, 23500, 24000, 24500,
25000
Press the Sor Tkey until the desired current is displayed. If
the desired CT value is not present in the above list, the ratio
may be ‘fine adjusted’ as follows: Press and hold the Wand S
buttons simultaneously for 2 seconds to enter ‘Fine Adjust
Mode’. This is indicated by the display showing “CtF”, this
enables the CT primary value to be changed in 10A steps until
the desired ratio is displayed. Press the Wkey to store the
value and continue to the next parameter.
VT SET-UP
The default voltage setting is 400V and this value should not
be altered. Press the Wkey to continue to the next parameter.

PULSE SET-UP
The pulse rate value (PLr) may be set between 0.1 and
100 pulses per unit. Press the Sor Tkey until the
desired pulse is displayed. Note that the unit of energy
(Wh/kWh/MWh) will automatically change to reflect the
primary values of CT & VT previously set. The pulse value
is set for both outputs during the process. Press the W
key to store the value and move to the next parameter.
Using the Sor Tkey the pulse duration value (PLt) may
be set in increments between 100mS & 20 seconds as
required. Press the Wkey to store the value and move to
the next parameter.
The Pulse Output Test (Pto) allows the meter pulse output
and connected data collection hardware to be tested,
regardless of whether an actual load is present. Press the
Sbutton to start the test. The display will show “Ptr” and
the output will pulse. This is verified by the front panel
l.e.d.s. Press the Sand Ttogether to stop the test and
reset the test counter.
SAVE & EXIT
After the unit has been set correctly, press the Wbutton to
save the set values and exit. The display will show
“storing” to confirm this action.
6 TECHNICAL CHARACTERISTICS
Connection: 3 Phase 3 or 4 wire Unbalanced, 3 Phase
Balanced, Single Phase Load.
Inputs: Voltage: 400/230V 3 Phase 3/4 wire
Current: 5A – External CTs. Fully isolated.
Burden: <0.1VA per phase Current/Voltage
Pulse Output: Opto isolated volt free contact
Rating: 100mA ac/dc, 100V ac/dc max
Value: 1 pulse per kWh
1 pulse per 10 kWh
1 pulse per 100 kWh
1 pulse per 1000 kWh
Duration: 100ms.
Isolation: 2.5kV for 1 minute
Power Supply: 230V 50/60Hz +/- 15%
Overload: Voltage x 4 for 1 hour
Current x 40 for 0.5 seconds max
Consumption: 2VA
Weight: 325g
IP Rating: Instrument = IP20 Front panel = IP40
Temp Range: -10o- +65o
Dims: 106w x 58d x 90h mm (6 DIN)
NOTE: Do not expose the instrument display to direct
sunlight.
Unit 5 Southmill Trading Centre, Southmill Road, Bishop’s
Stortford, Herts. CM23 3DY.
01279 503173 [email protected].uk
www.elcomponent.co.uk 08.08