Ditel KOS1401 User manual

1.0 SPECIFICATIONS
1.1 KOS1401 LOOP POWERED TRIP
INPUT
Type Two wire 4-20mA, 50mA Max.
Protection Reverse connection protected.
Loop Drop 5V Max.
OUTPUT
Alarm HIGH or LOW level switch selected, side entry.
Contact Single Relay Changeover with NO/NC contacts available.
Rating Resistive Load 2ª@250V AC/125V DC
Max. Power 150W (Inductive Loads).
Indication Alarm LED on module front face
Setpoint 0-100% multi turn potentiometer, access on module front
face(Repeatibility ±0.2%)
Hysteresis 0.1-5% Single turn trim pot on module front face
Delay 0.5 second fixed delay
Failuremode On loss of signal: HIGH level No alarm condition
LOW level Alarm condition
(i.e. Alarm operates as if signalhas fallen to –25% or 0mA)
Min.Current 3.5mA
1.2 GENERAL SPECIFICATIONS
Isolation 3000V AC rms between contacts and inputs
1000V AC rms between contacts
Ambient 0-50ºC ; 10-95% RH non condensing
Connection Captiveclampscrews
Cable Size 4mm2solid/2.5mm2 stranded
Case Material Grey Poliamide
Case Flammability To UL94-V0 VDE 0304 pt3 Level IIIA
Dimensions 60 x 60 x 21 (67.5mm above rail)
Mounting Snap on top hat (DIN EN 50022-35)
Max Vibration 12G 10 to 55 Hz at double amplitude 2mm
Shock Res 12G
Compliant with EN50081-1, EN50082-1
Weight 100grams
2.0 INSTALLATION
WARNING - Hazardous voltages may be present on the terminals – the
equipment must be installed by suitability qualified personnel and
mounted in an enclosure providing protection to at least IP20.
WARNING –If
not installed and used in accordance with these
instructions, protection against hazards may be impaired.
(IMPORTANT NOTE it may be preferred to set the user adjustment on
the bench prior to installation).
2.1 MECHANICAL
This trip must be housed within a suitable enclosure that will provide
protection from the external environment, to ensure that the stated
temperature and humidity operating ranges are mantained. As KOS1401
contains a high quality relay, care must be taken to ensure the trip is not
subjected to strong shock or vibration, as this may result in momentary
opening of the relay contacts. The KOS1401 must not be located near a
strong magnetic field, such as a transformer, solenoid or electric motor.
The KOS1401 case is designed to snap fit onto a standard ”TOP HAT”
DIN rail. To remove from DIN rail, apply pressure at the bottom face of the
back upwards towards the rail to release the spring clip and tip away from
the top. The trip may be mounted in any orientation and stacked side by
side along the rail.
2.2 ELECTRICAL
Connections to the trip are made via screw terminals, with wire protector
plates provided inside each terminal. To maintain CE compliance twisted
pair (screened) cables are recommended for signal connections. It is also
good practice to ensure that all 4-20mA loops are grounded at a single
point. Before installation ensure the 4-20mA loop has enough voltage
available to drive the trip. Refer to the above specification for the loop
voltage drop. The change over contacts provided by the KOS1401 are
capable of switching 250V AC 125V DC @ 2 A resistive load, 150 Watts
inductive load. Internal Varistors are connected across the contacts to
protect against over voltage. It is advised that a external RC snubber
network is used when switching inductive AC loads (see fig 1).When
switching DC inductive loads, a diode connected in parallel with the
inductor must be used to protect the contact from the energy stored in the
inductor (see fig 2).
KOS1401
LOOP POWERED
TRIP AMPLIFIER
1 RELAY
kos1401manualB.doc
30727052
Oct.99
WARRANTY
The instruments are warranted against defective materials and
workmanship for a period of three years from date of delivery.
If a product appears to have a defect or fails during the normal use
within the warranty period, please contact the distributor from which
you purchased the product.
This warranty does not apply to defects resulting from action of the
buyer such as mishandling or improper interfacing.
The liability under this warranty shall extend only to the repair of the
instrument. No responsability is assumed by the manufacturer for
any damage which may result from its use.
KOSMOS SERIES

DISEÑOS Y TECNOLOGÍA
Travessera de Les Corts, 180
08028 BARCELONA, Spain
Tel: +34 - 93 339 47 58
Fax: +34 - 93 490 31 45
e-mail: [email protected]
DITEL FRANCE, s.a.r.l.
Les Costes,D18
30360 CRUVIERS-LASCOURS,France
Tel: +33 -(0)4 66 542 770
Fax: + 33 -(0)4 66 542 771
e-mail: [email protected]
DITEL CORP.
379 Rye Beach Avenue
Rye, NY 10580, USA
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
2.2 ENTRADA
Installation overvoltage category 2 (BS EN61010-1)
-If the equipment is to be used in environments with overvoltage
category 3, transient suppressors should be installed on wiring
carrying greater than 50VAC o 75VDC.
-Any power supply to the equipment greater than 50VAC o 75VDC
must be protected by a suitable fuse and a switch or circuit breaker
wich should be near the equipment.
-Theequipmentcontainsnouserserviceableparts..
4.0 ALARM TRIP SETUP
Note: Latching relays are used in this product in conjunction with an
advanced relay drive circuit. During commissioning, on initial power
up, or after switch settings have been modified, one trip operation
must be completed in order to synchronise the latching relay. Once
this cycle has been completed the unit will function correctly during
normal operation cycles. On power down the trip contacts will rest
as for a -25% (0mA) process value and take this state indefinitelly
until power up. The inicial power up cycle will only be required again
if the unit switch settings are changed, or the unit is removed from
the installation and is subjected to shocks greater that 12G, i.e.
during transit.
This section deals with the trip setup. Three adjustments are available to
the user :
-High/Low alarm selection switch located on the side of the trip .
-Setpoint adjustment – single turn front panel potentiometer
provides 0-100% setpoint range.
-Hysteresis adjustment , single turn potentiometer located on front
panel provides 0.1 a 5% setpoint hysteresis. Hysteresis is provided
to stop relay chatter at the trip point, the amount of hysteresis
required will be dependent on the process signal noise.
A red LED indicates alarm states ON.
With care, the KOS1401 trip setpoint may be set up in the process but the
task is greatly simplified by replacing the process signal with a adjustable
4-20mA current source, to simulate the 4-20mA process signal.
The set up process is as follows:
a. First decide on the type of trip required, “High” for alarm ON state
above setpoint, or “low” for alarm ON state below setpoint. Set the
High/Low alarm selection switch on the side of the enclosure to the
desired setting, by inserting a 3mm blade screww driver into the
hole and apply one press against the switch plunger. This will
toggle the switch between the two alarm settings being:
High alarm state – plunger out (flush with the enclosure inside face)
Low alarm state – plunger in (depressed below inside face)
b. Using a 3mm screw driver, turn the Hysteresis control full
anticlockwise to set the hysteresis to 0.1%
c. Set the process current to the desired trip alarm setting, then using
a 3mm screw driver adjust the setpoint until the alarm changes
state. Clockwise to increase, anticlockwise to decrease. Adjust the
setpoint backwards and forwards until it is positioned at the point at
which the alarm LED has just come on.
d. Set the hysteresis control to the desired value, as a guide fully
clockwisesets 5%, mid position2.5%.
e. Now raise and lower the process input signal about the trip setting
and ensure the alarm trips at the setpoint and trips off at setpoint
plus (minus) hysteresis. If required fine adjust settings.
f. Now fully operate the system, it may be found necessary to adjust
the hysteresis setting during operation depending upon the
fluctuation on noise present on the process signal.
4.0 OPERATION
Once setup and operating satisfactorily the trip amplifier requires no
furtheruseradjustments.
5.0 MECHANICAL DETAIL