Rish EM 3490 SS Installation & Operating Instruction

EM 3490 SS
Single Phase Energy Meter
Installation & Operating Instructions
Section Contents
1. Introduction
2. Measurement Reading Screen
3. Phase Indications
4. Programming
4.1 Password Protection
4.2 Menu selection
4.2.1 System Parameter selection screen
4.2.1.1 Potential transformer Primary value
4.2.1.2 Potential transformer secondary value
4.2.1.3 Current transformer Primary value
4.2.1.4 Energy Display on modbus
4.2.1.5 Energy Digit Rollover(reset) count
4.2.2 Communication Parameter selection screen
4.2.2.1 Address Setting
4.2.2.2 RS 485 Baud rate
4.2.2.3 RS 485 Parity selection
4.2.3 Reset Parameter selection screen
4.2.3.1 Resetting Parameter
4.2.4 Relay Output parameter selection screen
4.2.4.1 Pulse Duration (width) selection
4.2.4.2 Pulse rate divisor
4.2.5 Quit screen
5. Relay Output (Optional).
5.1 Pulse Output
6. RS 485 (Modbus) Output
6.1 User assignable Modbus Register
7. Phaser Diagram
Installation
8.
8.1 EMC Installation Requirements
8.2 Case Dimensions and Panel Cut-out
8.3
Wiring
8.4 Auxiliary Supply
8.5 Fusing
8.6 Earth / Ground Connections
Network Wiring
9.
10. Specification
Connection for Optional Pulse output / RS 485
11.
15000251_Rev.C - 12/ 08
1. Introduction
The instrument is a panel mounted 96 x 96mm DIN Quadratic energy
meter. It accumulates Active energy, in single phase network.
The instrument also measures AC Voltage, AC Current, Frequency,
Power, Power factor, Phase Angle, Apparent Energy which can be accessed via
Modbus. All voltage & Current measurements are True RMS upto 15th harmonic.
Ultra high brightness LED display.
Meter can be configured & Programmed at site
for the following :
PT Primary, PT Secondary, CT Primary, Modbus
Settings & Pulse output settings.
x1000 kWh
V I
ON REV
The front panel has two push buttons through
which the user can reset the energy & configure
the product.
3600 Imp/KWh
The front panel has Impulse red led, flashing at
rate proportional to measured power.
Its impulse rate is 3600impulses/kWh.
Down
Up
TABLE 1:
Measured Parameters Units of measurement
Display Parameter
Active Energy (8 digit counter) kWh
Modbus Parameter
System Voltage Volts
Amps
System Current
Frequency Hz
Active Power Kwatts
Reactive Power KVAr
Apparent Power KVA
Power Factor
Phase Angle Degree
Active Energy Wh
Apparent Energy VAh
2. Measurement Reading Screen
In normal operation the user is presented with active energy measurement screen.
Screen 1 : Active Energy (kWh)
x1000 kWh
V ON I REV
3600 Imp/KWh
Active energy is displayed in 8 digit counter with auto ranging feature. Below given table
describes auto ranging with minimum resolution of energy measured in perticular range.
When x1000 LED glows the energy is displayed in mega watt.
Display Format X1000 LED Minimum resolution
99.999999
OFF 1 miliWatt
999.99999 OFF 10 miliWatt
9999.9999 OFF 100 miliWatt
99999.999 OFF 1 Watt
999999.99 OFF
10 Watt
9999999.9 OFF 100 Watt
99999999
OFF 1 kiloWatt
999999.99 ON 10 kiloWatt
9999999.9 ON
100 kiloWatt
99999999
ON 1 MegaWatt
Maximum Active energy count reached is 99999999 MegaWatt after this counter
rollovers to zero and measurement starts from first range.
Impulse led on front panel can be used to cross check the energy calibration on site.
Its nominal impulse rate is 3600 impulses / kWh.
1
3. Phase Indications
x1000 kWh
V I
ON REV
3600 Imp/KWh
"LED Von glowing"
Voltage Phase present
kWh
x1000
V ON I REV
3600 Imp/KWh
"LED Von off"
Voltage phase absent
Setup Parameter Screen
SEL
(Select)
SEL
SEL
SYS SEriAL
A
( ( )
Select System Serial Communication
Parameter
Parameter)
(Sec 4.2.1) (Sec 4.2.2)
UP
Add
( )
PT Primary (Modbus Address)
(Sec 4.2.2.1)
(Sec 4.2.1.1)
US
( )
PT Secondary br
(Sec 4.2.1.2)
(Baud Rate)
(Sec 4.2.2.2)
AP
(CT Primary) Pr
(Sec 4.2.1.3)
(Parity Bits)
(Sec 4.2.2.3)
A
x1000 kWh
V I
ON REV
3600 Imp/KWh
"LED IREV glowing"
Current out of phase w.r.t voltage .
x1000 kWh
V I
ON REV
3600 Imp/KWh
"LED IREV off"
Current in phase w.r.t voltage
cd (PassWord) Exit
from setup Parameter to Main Display
SEL
SEL
rELAY
rESEt
(
Reset Parameter) (Select Relay Parameter)
(Sec 4.2.3) (Sec 4.2.4)
(
non No Parameter), dur
( Relay Pulse Duration)
(Sec 4.2.4.1)
E
(Energy),
"Down" key
(Sec 4.2.3.1) rAt
(Pulse Rate Divisor)
(Sec 4.2.4.2)
: UP KEY
: DOWN KEY
2
quit
A
(Exit Menu)
(Sec 4.2.5)