Veris Industries EA10 SERIES Install - Manual (Page 2)

ZL0102-0A PAGE 2 ©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected] 05126
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TM
INSTALLATION GUIDE
EA10 SERIES
OPERATION
The EA10 DC string monitoring system measures current in combiner boxes or other
DC applications. The system includes a communications unit that supplies power
to the DC current sensing modules and provides Modbus RTU communication. Up
to four DC current sensing modules connect serially to one communications unit,
each with eight DC current sensors, to monitor a total of 32 strings (channels) per
communications unit. Connect up to 63 communications units in a daisy chain
for large system monitoring. All boards can be mounted on standard 35 mm
DIN rail for easy installation. Pulse Reset Technology in the current sensor offers
protection against output drift and immunity to power spikes and surges up to
20 kA. All components are fully encapsulated to protect from moisture and other
environmental conditions
PRODUCT DIAGRAM
1
2
3
4
5
6
6 11
12 12
7
8
9
10
Communications Unit
Current Sensing Module
1. RS-485 Connection: The communications unit provides an RS-485 2-wire (+
shield) serial interface that supports Modbus RTU to 38.4 kb/s. Used for Modbus
serial communications. Connect Shield (S) to ground at a single point on the
RS-485 bus.
2. Control Power Connection: The communications unit requires user-supplied
24 to 42 VDC, 7 W (must be safety isolated, non-hazardous, limited power source
(LPS), Class 2 source or better).
3. Communications Setting DIP Switches: configures baud rate and parity.
4. Communications Address DIP Switches: configures Modbus address. Each
Modbus device must have a unique address.
5. Communications Unit LEDs: Status, TX, RX, and Power. See LED Indicators
section, page 6.
6. Male 20-Pin Connector: for connection to current sensing modules. Confirm
that the o-ring is installed to ensure a proper seal for the product’s environmental
ratings.
Note: Disconnect power to panel and strings before connecting or
disconnecting current sensing modules.
7. Female 20-Pin Connector: provides a connection between the communications
unit and successive current sensing modules.
8. Current Sensor: 8 sensors per sensing module. Each current sensor is capable of
monitoring conductors with a maximum outer diameter of 0.31” (8 mm) and 0.1 A
to 20 A (+20% over) the current sensing range.
9. Current Sensing Module Status LED: indicates status of the sensing module.
See LED Indicators section, page 6.
10. Current Sensor LED: one LED for each of the eight sensors on the module. See
LED Indicators section, page 6.
11. End Cap: environmentally seals the female 20-pin connector on the last current
sensing module. Confirm that the o-ring is installed on the end cap to ensure a
proper seal for the product environmental ratings. The end cap ships installed on
the communications unit.
12. DIN Stop Clips: Install stop clips in front of the communications unit and after
the last current sensing module to ensure a snug fit. Two DIN stop clips are
included with the communications unit. Additional stop clips are available from
Veris (model number AV02).
INSTALLATION EXAMPLE
EA10 Communications
Unit
Summing Block
EA10 DC Current
Sensing Module
Fuse Block
DIMENSIONS
3.88”
(98.5 mm)
3.68”
(93.5 mm)
2.72”
(68.6 mm)
2.48”
(63.0 mm)
5.49”
(139.5 mm)
0.31”
(8.0 mm)
0.69”
(17.5 mm)
5.37”
(136.4 mm)
4.33”
(110.0 mm)
0.77”
(19.5 mm)
0.87”
(22.2 mm)
1.57”
(39.9 mm)
DIN Rail
PRODUCT IDENTIFICATION
Model Description Amperage
Range
Output
EA10DD08B DC current sensing module with 8 strings,
encapsulated
Up to 20A per CT
EA10HC1AB Communications unit, Modbus RTU,
encapsulated, 24 VDC, supports up to
four EA10DD08B units (up to 32 strings
per communication unit)
Modbus RTU