Seneca T201DC User manual

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seneca
This document is property of SENECA srl. Duplication and reproduction are forbidden, if not authorized. Contents
of the present documentation refers to products and technologies described in it. All technical data contained in
the document may be modified without prior notice. Content of this documentation is subject to periodical revision.
SENECA s.r.l.
Via Austria, 26 – 35127 – PADOVA – ITALY
Tel. [phone] - Fax [phone]
Manuals and configuration software are available at website: www.seneca.it/products/t201dc
Technical support: [email protected]. Product Informations: [email protected]
General Specifications
Isolated, contact-less loop powered direct current
transducer.
The device’s function and look are similar to a standard
alternating current active CT, but with the feature of
measuring the continuous component the current.
No shunt, no wasted power of primary current circuit.
Powered by the 4 – 20 mA loop, from 6 to 100 V, polarity
reversal, transients to 120 V and surges to 1.5 J protected.
Eight ranges, unipolar or bipolar, dip-switch selectable.
Damping filter availability to improve stable reading.
Superimposed alternating current tolerance and pulsed
current operation to 50 A pk (AC + DC).
Built-in μC system fault check.
Over-temperature protection.
Quick response for over-current (~ 40 ms).
Suitable for batteries , battery chargers, solar panels,
power units and generic dc loads.
Single wire possible cabling, by powering the device from the
measuring current itself, and closing to the system common return.
Compact size: overall dimensions less than 40 x 40 x 20 mm.
Electrical endurance and easy to use this device fits every
kind of current measurement to 40 Adc.
T Line - Loop powered in-field converters
T201DC
Contact-less direct current transducer
EN
patented
E

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Technical features
INPUT
Connection
Pass-trough hole; the current enters from the DIP-switch side.
Hole diameter
12.5 mm, 1/2’.
Ranges
- Single polarity: 0 – 5 A, 0 – 10 A, 0 – 20 A e0–40A.
- Dual polarity: -5 – +5 A, -10 – +10 A, -5 – +20 A, -10 – +40 A.
DIP-Switches selectable.
Maximum rating
> 1000 A; correct reading range: ± 300 A.
Superimposed AC
(f > 35 Hz)
- Allowable peak value: -15, +50 A.
- Full-wave rectified: -10 – 32 A.
- Half-wave rectified: -5 – 16 A.
Insulation
When a sheathed wire is used, the insulation voltage is set by
sheath properties. On a bare wire, it’s stated 1 kVC
OUTPUT AND POWER SUPPLY
Type
Passive current loop 4 – 20 mA. Terminals and .pm
Terminals
Screw terminal pitch 5.08mm for max 2.5mm cables.
2
Polarity
1 (+) incoming current, 2 (-) outgoing current.
Limits
- Internal fault / Over-temperature: 3.5 mA.
- Under-range / Over-range: 3.6 / 21.0 mA.
- True reading: 3.8 / 20.5 mA.
Minimum voltage
6 V.
Maximum voltage
- 28 V directly wired (R =0). Compliant to UL standard.
EXT
- 100 V with added resistor (see below). Not UL standard compliant.
Other protections
- Polarity reversal.
- Loop current limiting on hardware fault.
- Over-temperature protection.
Maximum dissipation
power
- 650 mW continuous.
- 2.5 W pulsed (10 s).
- 1500 W.ms on surge (500 V, 40 Ω).
ACCURACY
Max Errors
- Input section: 0.1 % + 14 mA.
- Output section: 0.05 % + 4 μA.
Temperature Coefficent
< 150 ppm/K.
Error due to EMI
< 50 μA, tested on bare wire Φ = 10mm.
Response Time
- Without damping filter: 100 ms.
- With damping filter: 600 ms.
OVERVOLTAGE CATEGORY
Bare conductor
CAT. III 300V
Insulated conductor
CAT. III 600V

External resistor for voltage > 30 V (R for U 30 V)
EXT LOOP >
It’s possible to extend the loop supply voltage to 100 V, simply adding an external resistor in series with the device,
in order to dissipate excess supplied power. The total loop resistance must comply with the following limits:
U-6
2
LOOP ULOOP
¾¾¾¾ £ £ ¾¾¾¾R [Ω] The maximum dissipation on is: P
TOT EXT Rext EXT
R 0.5 R [mW].»
2.6 0.022
For the resistor choose a power rating at least double of that calculated PRext.
EXAMPLE: With V = 92 V, R =250 Ω. you have: [Ω] and [Ω]
LOOP S 3255 R 3909 3005 R 3659££ ££
TOT EXT
So you have to take a 4 W resistor: 4 W: = 3.3 kΩ, 5%, <100 ppm/KREXT
For variable supply voltage, R must be valid for both range limits.
EXT
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The symbol in the above table means switch in ON position( ).1Ç
The device is factory setted to 0 range, with damping filter ( ).– 011140 A
DIP-switches
Single and dual polarity ranges
Damping filter
DIP-SWITCHES
single polarity
range
DIP-SWITCHES
Dual polarity
range
Filter
1
2
3
1
2
3
4
05A–
Ç
-5 .. +5 A
Ç
With filter
Ç
0–10 A
Ç
Ç
-10 .. +10 A
Without filter
Ç
0–20 A
Ç
Ç
-5 .. +20 A
Ç
Ç
0–40 A
Ç
Ç
Ç
-10 .. +40 A
OPERATING CONDITION
Protection index
IP20.
Temperature
-30 +70 °C.–
Storage Temperature
-40 +85 °C.–
Humidity
10 90 % non-condensing–
Altitude
Up to 2000 m a.s.l.
CASE
Screw fix
- Distance between centers: 30 mm.
- Self-tapping screw diameter: 2.9 mm.
- Depth of thread: 6 mm.
Weight
51 g.
Overall dimensions
38 x 40 x 20 mm (without terminals).
Box material
PA6, black.
STANDARDS
EN61000-6-4 (electromagnetic emission, industry environment).
(electromagnetic immunity, industry environment).
EN61000-6-2
EN61010-1 (sicurezza).

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Disposal of electrical & electronic equipment (applicable throughout the EU and other countries wit separate collection programs). This symbol, found on your product or on
its packaging, indicates that this product should not be treated as household waste when you wish to dispose of it. Instead, it should be handed over to an applicable collection
point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences to the
environment and human health, which could otherwise be caused by inappropriate disposal of it. The recycling of materials will help to conserve natural resources. For more
detailed information about the recycling of this product, please contact your local city office, waste disposal service or the retail store where you purchased this product.
Multi-turn primary winding to improve sensibility
You can increase the sensibility of T201DC simply passing several times in the hole with
the measuring current, realizing turns with multiplicative effect: for example, passing 5
times in the hole, as to see 4 turns, choosing a 5 A range, you get an equivalent sensibility
of 1 A full-scale. When you make this, let dispose the turns with symmetry in order to
preserve accuracy: use diametric contraposition with 2 turns, cross disposition with 4
turns, 60° with 6 turns, and so on.
Mounting
The device can be located in any position and place, in accordance with the operating
conditions above stated. Use the included holder bracket when fixing to a DIN rail.
: High-strength static magnetic fields may change the output value: let avoidWARNING
closeness to permanent magnets, electromagnets or iron bulks that cause such a
modification of the surrounding magnetic field; try a different arrangement or orientation
if zero error was greater than expected.
p
m
Damp
T201DC
Made in
ITALY
4 – 20 mA
Output = 4 – 20 mA
+
Powersupply
UCUC
mA
+
4-20 mA
SENECA
S
Bipolar
Range
REXT
E 002944TE 002944T
DC current transducer
Settings
(see manual)
Patented
40 A