Adtech SCT 502-1 Instruction Manual

1.0 INTRODUCTION
These instructions refer to the above model. Supplementary
sheets are attached if the unit has special options or features.
For detailed specifications, see page 4 or refer to the Data
Bulletin. All ADTE CH instruments are factory calibrated and
supplied with a label detailing the calibration. Ad j ustments
are normally not necessary. A simple check should be
performed to verify calibration before installation to ensure
that it matches the field requirement.
2.0 GENERAL DESCRIPTION
The ADTECH SCT 502-1 is an Isolated Signal Transmitter
that is offered in any one of the following 1/0 combinations:
(a) 4-20 mA DC in, 0-10 voe out
(b) 0-10 voe in, 0-10 voe out
o - o -
( c)
±10 voe in, ±10 voe out
The output is designed to work into a load of 5k Q or larger.
The input is electrically isolated from the output and the
power supply by 600 volts ac or 1000 vdc peak.
3.0 INSTALLATION
The instrument is supplied in a DIN rail mount general
purpose enclosure as standard. Installation area/location
must agree with the supplied instruments including operating
temperature and ambient conditions.
Mounting
Refer to Section 1 O for outline and mounting drawing and
clearance dimensions. The instrument is surface mounted
by means of DIN rails types G and T 32mm and 35mm
respectively.
Electrical Connections
The wire used to connect the instrument to the control
system 1/0 should be a twisted pair ( s ) and sized according
to normal practice. Shielded cable is not normally necessary
(if used, the shield must be grounded at the input negative of
the AOTEeH instrument and left floating at the sensor).
A 12 position compression terminal block is provided for 1/0
and power connection. A housing ground terminal is not
required due to non-metallic housing.
Controls
Multiturn ZERO and SPAN controls are provided to calibrate
the instrument. The multitu rn controls are accessible through
the instrument front p anel and are clearly marked for ease
of use.
Pin j umpers for SPAN and ZERO are provided for ease of
recalibration to other standard or optional inputs. Refer to
tables on page 3.
SCT 502-1
Isolated Bipolar Signal Transmitter
Instruction Manual
4.0 MAINTENANCE
These instruments are electronic and require no maintenance
except periodic cleaning and calibration verification. If the
unit appears to be mis-operating it should be checked as
installed per section 6.0 or removed for a bench check per
sections 6.0-7.0. MOST problems are traced to field wiring
and/or associated circuits. If the problem appears to be with
the instrument, proceed to sections 6.0 and 7.0.
5.0 CONNECTIONS
Standard connections are shown below and on the instrument
face plate, Data Bulletin or on attached supplementary
sheets.
(+)
INPUT SIGNAL
H
(-)
OUTPUT SIGNAL
(+)
- 1 -
I
I
2'000 09
°iNPuf
�
ADTECH
SCT 502-1
ISOLATOR
�SPAN
-- ZERO --
AC
�p':t:
N L
N
11
I
I POWER
115 orVAC
'
190-A-502-1