WARNING
This instrument has different mains wiring details to instruments in
the same series manufactured before January 1 1997. We
strongly recommend close attention to the instruction manual
supplied with this instrument.
The instrument is not fitted with a separate a.c. power supply
on/off switch and will have a.c. voltages present whenever it is
connected.
WARNING
Before removing the covers for installation, maintenance, or repair,
the mains supply must be isolated.
This instrument is specified for use in a Pollution Category 11
Environment which is normally non-conductive with temporary light
condensation. This instrument must not be used in more hostile,
dusty or wet conditions.
Do not use this instrument in a flammable or explosive
atmosphere.
4000
OPERATING
INSTRUCTIONS
XG.0430 rev.3
WARRANTY
This instrument has been carefully assembled and tested, and is
warranted against faulty workmanship and materials for 12 months from
the date of purchase.
During the warranty period any defective instrument will be repaired or
replaced at the discretion of the manufacturer This warranty does not
cover damage or failure resulting from misuse or accident.
Modification, adjustment or any alteration with the internal arrangement of
the instrument shall absolve the manufacturer from any liability in respect
of the instrument.
Any instrument to be repaired should be forwarded to the manufacturer,
carriage paid and at the owner’s risk.
A brief description of the fault should be included.
The cable should be clamped into position using the clamping arms
provided. It is imperative that all covers are replaced before the power
supply is switched on.
SELECTING AND INSTALLING POWER SUPPLY
(MODELS 4501, 4504, 4801, 4804)
Remove the PCB from its housing, locate the supply voltage selector as
shown in Figure 1, then configure to the desired voltage.
The supply should be wired to the terminal connector and fitted to the
appropriate position as indicated on the back of unit.
SAFETY STATEMENT
The design of this instrument has been checked to EN61010 for Class 11
use.
This operating instruction contains information and warnings that must be
observed to keep the instrument in a safe condition. The instrument
should not be switched on if it is damaged and it should not be used
under wet conditions.
For the correct and safe use of this instrument it is essential that both
operating and service personnel follow generally accepted safety
procedures in addition to the safety precautions specified.
Whenever it is likely that a safety protection has been impaired the
instrument must be made inoperative and be secured against any
unintended operation. Qualified maintenance or repair personnel should
be informed.
Safety protection is likely to be impaired, if for example, the instrument
shows visible damage or fails to operate normally.
SYMBOLS AND TERMS
POWER AND FREQUENCY REQUIREMENTS
This instrument operates from line voltages to Installation Category 11,
local level supplies distributed within the building.
Where caution is required. Refers the user to the
operator manual for further information.
This symbol warns the user that high voltages are
present close to this symbol.
These statements identify conditions or practices that
could be dangerous or fatal to personnel.
Alternating current.
Equipment protected throughout by reinforced
insulation.
To clean the instrument, disconnect all power sources and then wipe the
surface lightly with a clean, soft cloth dampened with water.
The instrument should preferably be operated in a clean, dry environment
with an ambient temperature of between 0°C and +50°C.
SERIES
Supply Voltage:
Power Consumption:
Fuse Rating:
216-253V a.c. 50/60Hz
109-126V a.c. 50/60Hz
230V a.c. 25mA
115V a.c. 45mA
230V a.c. 50mA (T) UL/CSA
115V a.c. 50mA (T) UL/CSA
Figure 1
1234 NC.COM.NO
Alarm Contact
where fitted
LN
WARNING
!
N
L
115v
or
230v
Hysteresis
Control
A division of Sifam Instruments Limited
Woodland Road, Torquay, Devon TQ2 7AY England
Telephone: +44 (0)1803 407693 Fax: +44 (0)1803 407699
Email: digitronsales@digitron.co.uk Website: www.digitron.co.uk
HYSTERESIS
(MODELS 4801, 4804)
The hysteresis is factory preset to ±2 counts. It should only be adjusted
by qualified and trained staff, and using a small insulated screwdriver as
indicated in Figure 1.
It should not be carried out while the instrument is powered up.
Hysteresis may be adjusted by ±1 count up to ±10 counts.
PLATINUM RESISTANCE SENSORS
(MODELS 4504, 4804)
The sensor should be connected to the instrument using a four core
copper cable as shown below:
USING 3 WIRE SENSORS
These should be connected as per the 2 wire sensors, but with terminal
A+B and C+D linked.
THERMOCOUPLES
(MODELS 4501, 4801)
Thermocouples should, if possible, be wired directly into the terminal
block taking care to observe the correct polarity.
If the thermocouple has to be extended, this should only be carried out by
using extension or compensating cable of a type appropriate to the
thermocouple being used.
The accuracy may be affected by cable lengths. This is also
affected by the type of cable.
NOTE:
REMOVAL OF PCB FROM CASE
Follow instructions for removal. Tap instrument (face down) into the palm
of the hand. If it does not slide out it can be pushed out by gentle
pressure from the rear on the terminal pins. Do use a screwdriver to
prise out the PCB.
not
WIRING
ALARMS
(MODELS 4801, 4804)
SET POINT ADJUSTMENT
All connections should be made using the supplied terminal plugs only,
and these slide on to the appropriate terminal pins. Detailed connections
are given on the rear of the instrument and these drawings should be
used in conjunction with the following instructions.
When refitting the plugs, ensue that this is done correctly.
These models have a relay fitted and the alarm point can be adjusted
from the front panel.
Hold in the set point button and adjust the set point potentiometer for the
required number of counts as indicated by the display.
Note:
RELAY CONNECTIONS
These instruments have a control relay with a rating of 5A at 250V a.c.,
and 30V d.c. for resistive loads.
Connection is shown on the rear label and should be made using the
supplied terminal block.
These ratings should not be exceeded and an external contactor should
be used for high power or 3 phase requirements.
PANEL FITTING
REMOVAL
The instrument is designed to fit in a panel cut out measuring 92 x 45mm.
The panel should be between 1.5 and 3.5mm thick.
The instrument is fitted by sliding into the aperture and pressing firmly
home into position.
Before the instrument can be removed from the panel, the connectors
be unplugged from the rear of the panel.must
Ensure that the power is disconnected.
Remove the front window by gently levering with a small screwdriver
on the slot on the lower edge of the window.
Use a screwdriver to release the clamping arms by slightly bending
back the lugs as shown below, whilst gently pulling the instrument
forward.
1.
2.
3.
N.C.COM N.O.
When relay is not energised:
N.C. = Normally Closed
COM = Common
N.O. = Normally Open
NB: The rear cover should always be fitted.
4504/4804
ABCD
Pt100
Standard Pt100 sensor identification colours:
Yellow RedAC
Black BlueBD
A
Thermocouple
BCD
4501/4801 +ve
-ve
