User manual for meter with U/I input SRP-77
- Do not use the unit in explosion hazard areas.
- Do not use the unit in areas with significant temperature variations, exposed to
condensation or icing.
- Do not use the unit in areas exposed to direct sunlight.
- Make sure that the ambient temperature (e.g. inside the control box) does not
exceed the recommended values. In such cases forced cooling of the unit must
be considered (e.g. by using a ventilator).
The unit is designed for operation in an industrial environment and must not
be used in a household environment or similar.
2.
GENERAL CHARACTERISTICS
meter is equipped with one current input 0-20 / 4-20mA and one voltage
input 0-5 / 1-5 / 0-10 / 2-10V. Current input has additionally overcurrent protection circuit,
which protects standard resistor. The selection of active input is realised by software, and
selected input can be changed at any time. Additionally the
allows user to select a
conversion characteristic of several kinds: linear, square, square root, and user defined
(max.20 points length). Result is showed on 4-digit LED display. Displayed values range can
be selected by user, from -999 to 9999, plus decimal point.
The device can be equipped with one or two relay (or OC type) outputs. Device
is equipped with RS-485 / Modbus RTU communication interface and sensor supply output.
The meter can be ordered in two power supply versions.
can be used for controlling and regulation of processes need proportional and
threshold control like: temperature processes (heating or cooling), valves controlling or other.
3.
TECHNICAL DATA
Power supply voltage
(depending on version)
External fuse (required)
Power consumption
85...
230
...260V AC/DC; 50 ÷ 60 Hz
or 19...
24
...50V DC; 16...
24
...35V AC
T - type, max. 2 A
max. 4.5 VA @ 85 ÷ 260V AC/DC
max. 4.5 VA @ 16V ÷ 35V AC
max. 4.5 W @ 19V ÷ 50V DC
Current input
0÷20 mA, 4÷20 mA overload protected,
maximum input current about 40 mA
Current measurement accuracy
± 0.25% ± one digit (for 0÷20 mA range)
Current input resistance
< 65
Ω
(typical 55
Ω
)
Voltage input
0÷5 V, 1÷5 V, 0÷10 V, 2÷10 V
Voltage measurement accuracy
± 0.25% ± one digit (for 0÷10 V range)
Voltage input resistance
> 50 k
Ω
4
!
!
