D2533-01-07
SEM1750
USER INSTRUCTIONS
Important - Please read this document before installing.
Every effort has been taken to ensure the accuracy of this document; however, we do
not accept responsibility for damage, injury, loss or expense resulting from errors and
omissions, and we reserve the right of amendment without notice.
IMPORTANT – CE, UKCA & SAFETY REQUIREMENTS
Product must be DIN rail mounted, inside a suitable enclosure providing environmental
protection to IP65 or greater.
To maintain CE EMC requirements, input and supply wires must be less than 30
metres.
The product contains no serviceable parts, or internal adjustments. No attempt must be
made to repair this product. Faulty units must be returned to supplier for repair.
Before attempting any electrical connection work, please ensure all supplies are
switched off.
ABSOLUTE MAXIMUM CONDITIONS (To exceed may cause damage to the unit).
Working voltage terminals Inputs
Working voltage terminals Outputs
(20 to 240) Vac 50/60 Hz or (20 to 240) Vdc,3 W
Current (0 to 20) mA, Voltage (0 to 10) V
Temperature (-20 to 70) °C
Approvals EN61010_1, EN61326
1 A anti-surge fuse recommended
Isolation supply to input/output
Output to output, input to input
Important – Read this
document before installing.
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1~DESCRIPTION.
SEM1750 is a dual channel signal conditioner designed to accept mA or voltage inputs
and provide isolated, industrial process output signals in mA or Volts. Each output
channel may be linked to either an input signal or to a maths function of both input
signals. This powerful feature allows the device to operate in several different modes.
The output signal can also be adjusted over the full working ranges (0 to 20) mA or (0 to
10) V, to provide common or custom process signals, examples (4 to 20) mA, (0 to
1)mA, (1 to 5) V. The SEM1750 is configured using the free software that allows the
user to configure the device without requiring calibration equipment. Maths functions on
each channel can be set up using the software as well as a 22-segment profile tool.
Input/output simulation tools for diagnostic purposes are also available.
2~RECEIVING AND UNPACKING.
Please inspect the packaging and instrument thoroughly for any signs of transit
damage. If the instrument has been damaged, please notify your supplier immediately.
3~SPECIFICATION.
Refer to data sheet for full specification. Download at www.status.co.uk
Basic mode, dual channel operation, 420 ms update,
(Ch1, Ch2) = (4 to 20) mA input, (4 to 20) mA output
4~INSTALLATION AND WIRING.
Important safety requirements
This equipment is suitable for environment Installation category II pollution degree 1 and
is classed as "PERMANENTLY CONNECTED EQUIPMENT". The equipment is intended
for industrial and commercial application only and not suitable for domestic or medical
use.
The equipment must be mounted inside an enclosure that provides protection >= IP65.
In NORMAL USE, the equipment will only be accessed for maintenance by qualified
personnel. Please ensure the equipment is mounted vertically with terminals (101 to 204)
at the bottom. This will provide maximum ventilation. This equipment may generate heat:
ensure the enclosure size is adequate to dissipate heat. Be sure to consider any other
equipment inside the enclosure.
The equipment surfaces may be cleaned with a damp cloth. Use a mild detergent/water.
Ensure the supply is off before cleaning and on completion of cleaning the equipment is
completely dry before the supply is turned back ON.
This equipment must be installed by a qualified person. All electrical wiring must be
carried out in accordance with the appropriate regulations for the place of installation.
DC supply must be derived from a local supply and not a distribution system.
Supply (20 to 240) Vac 50/60 Hz (20 to 240) Vdc. If supply is a HAZARDOUS VOLTAGE,
a supply isolation switch must be installed close to the equipment with the “OFF”
position clearly marked. Also, the supply must be fused with a suitable 1 A (T) fuse
(circuit breaker) installed close to the equipment.
USB configuration can be performed without the supply being connected. For safety
reasons, use 24 Vdc for a functional test of the unit prior to fixed installation. The
following operations should only be carried out on a disconnected device and under
ESD safe conditions: General mounting, connection and disconnection of wires.
4.1~MECHANICAL.
The equipment must be mounted on a DIN rail style DIN EN50022 inside a plastic or
metal enclosure with a protection level >= IP65. All wiring must be secured. Maximum
cable sizes 2.5 mm. Connection two-part screw terminals.
4.2~ELECTRICAL
CONNECTIONS
For wiring connections, refer to the side label on the SEM1750 and this document.
For channel one use pins 101 to 108, for channel two use pins 201 to 208
SUPPLY
(20 to 240) V dc 50/60 Hz
(20 to 240) V dc
Ma x Powe r 3W
S1 -
S2 +
INPUTS
(4 to 20) mA TX
Tx
202102
204104
+
-
mA
202
102
201101
+
-
Vdc
201101
203103
+
-
Volts
208108
OUTPUTS
Vdc
LOAD
207107
External Powered mA
+
-
205105
207107
Internal Powered mA
LOAD
207107
Vout
206106
Voltage Output
+
-
205105
+
-
+
-
LI NK P IN 107 AND 106 (207, 206)
Input connections for cable length >3 metres: use screen or twisted pair cables. Max
cable run 30 metres.
Output connections for cable length >3 metres: use screen or twisted pair cables. For
current outputs max cable run 1000 metres, Voltage output 30 metres.
Supply maximum cable run 30 metres. As stated in the IMPORTANT SAFETY
REQUIREMENTS the supply must be fused with a 1A (T) fuse and provision provided
to isolate the circuit when hazardous voltages are being switched.
LED front panel indication.
Channel 1 and channel 2 LEDs show green for in range input condition.
Channel 1 and channel 2 LEDs show red for out of range input condition.
