D2475-01-09 CN5787 SEM1700 User Guide
SEM1700
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 & 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.
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1~DESCRIPTION.
The SEM1700 is a DIN rail-mounted universal signal conditioner from Status Instruments.
It has been designed to accept most common process and temperature sensor inputs and
provide the user with a programmable current or voltage output signal, plus dual relays
with a programmable delay function. Isolation is provided between input, output and
supply. All temperature ranges are linear to temperature. Both input and output loop
excitation are provided, as well as a universal power supply.
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
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".
In NORMAL USE, the equipment will only be accessed for maintenance by qualified
personnel. Please ensure the equipment is mounted vertically with terminals (1-10) at
the bottom. This will provide maximum ventilation and ensure correct operation of the
cold junction sensor. 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 on a
damp cloth. Ensure the supply is off before cleaning and on completion of cleaning the
equipment is completely dry before the supply is turned back ON.
To keep the safety distances, the relay on the device must not be connected to both
hazardous and non-hazardous voltages.
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 (22 to 240) V ac 50/60 Hz, (20 to 240) V dc. If the 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 1A (T)
fuse (circuit breaker) installed close to the equipment. Maximum cable run 50 m.
Relay 1,2 outputs are isolated from each other. Max switching current (1 A @ 240 V ac,
1 A @ 30 V dc) Non-Inductive. Fuse relay circuits with a suitable 2A (T) fuse installed
close the equipment. If a HAZARDOUS VOLTAGE is being switched, then an isolation
switch must also be installed close to the equipment with the off position clearly
marked.
USB configuration can be performed without the supply being connected. For safety
reasons, use a 24 VDC for functional test of unit prior to fixed installation. The following
operations should only be carried out on a disconnected device and under ESD safe
conditions.
4.1~MECHANICAL.
The equipment must be mounted on a DIN rail style DIN EN 50022 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 SEM1700 and this document.
Input connections for cable length >3 metres use screen or twisted pair cables.
Thermocouple connections: use the correct compensating cable. Pt100 connection; all
wires must be equal length (resistance). 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.
Relay connections –relays 1 and 2 are isolated from each other. As stated in the
IMPORTANT SAFETY REQUIREMENTS relay circuit must be fused with a 2A (T) fuse
and provision provided to isolate the circuit when hazardous voltages are being
switched.
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.
