gefran 55 Bedienungsanleitung
55
MULTIRANGE TIMER WITH DIGITAL SETTING
Main applications
•Timer
•Delay timer
Main features
•Three time ranges
•Two relay outputs
•Digital setting
GENERAL
The 55 is a timer with internally
generated frequency base.
The time range is selected using the
yellow thumbwheel switch according to
the positions:
A(9.99 sec),
B (99.9 sec),
C(999 sec).
Afterwards the time set is selected using
the numerical thumbwheel switches.
TECHNICAL DATA
OUTPUT
Relay
5A, 250Vac cosϕ=1 (3,5A at cosϕ= 0,4)
POWER SUPPLY
- 24/48Vac ±10%, 50/60Hz, 6VA max.
- 110/220, 120/240Vac ±10%
- 24Vdc ±10%
50/60Hz, 3VA max.
AMBIENT CONDITIONS
Working temperature: 0...50°C
Storage temperature: -20...70°C
Humidity: 20...85%Ur non condensing
FUNCTIONS
Timer start on power-on.
Repeatibility: ±1% of selected value at
nominal conditions (20°C and nominal
voltage value).
Accuracy, ±1% selected value.
Reset time, 200 msec.
WEIGHT
300 g
MAINTENANCE
Repairs must be carried out only by
trained and specialised personnel.
Remove the power to the instrument
before accessing the internal parts.
DO NOT clean the case with hydrocarbon
derivatives (trichlorethylene, petrol, etc.).
The use of such solvents can adversely
affect the mechanical reliability of the
instrument.
To clean the plastics case please use a
clean cloth with ethyl alcohol or water.
SERVICE
GEFRAN has a service department.
The guarantee excludes defects caused
by usage that does not conform to the
instructions.
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MAIN FUNCTIONS
Mod. 55/2
Timer with one time relay (Relay 1) and one
instantaneous relay (Relay 2).
Timing starts through connection to the
power supply voltage.
Relay 1 energises at the end of timing t.
Relay 2 energises instantaneously when line
switch closes.
Mod. 55/3
Timer with two time relays in parallel.
Timing starts through connection to the
power supply voltage.
Relay 1 and relay 2 energise at the end of
timing t.
Mod. 55/4
Timer with one time relay (Relay 1) and
Relay 2 in opposition.
Relay 1 is de-energised during timing and
energised at the end of time t.
Relay 1 is energised during timing and
de-energised at the end of time t.
JUMPERS DESCRIPTION
Power supply board / Copper side
Logic board / Copper side
FACEPLATE DESCRIPTION
A- Full scale preset
B- Time Set
C- Red LED for timing indication
IP20 faceplate protection, IP65 available with sylicon
rubber cover cod. 51183 (see accessories)
BA
C
Jumpers configuration:
Mod. 55/2
T-W, X-Y, A-X CLOSED
The other ones are OPEN
Mod. 55/3
T-W, T-S, X-2, A-X CLOSED
The other ones are OPEN
Mod. 55/4
T-W, X-Y CLOSED
The other ones are OPEN
Line
Relay 2
Relay 1
Line
Relay 2
Relay 1
Line
Relay 2
Relay 1
7
CONNECTION DIAGRAMDIMENSIONS AND CUT-OUT
POWER SUPPLY SELECTION
ACCESSORIES - PROTECTION IN SILICON RUBBER
48x48 (1/16 DIN) Order code 51183
The transparent faceplate protection cover in silicon rubber performs the double function:
•ESD protection (electrostatic discharges) in conformity to EC standards
•IP65 frontal protection from dust.
ATTENTION: To set the Full Scale or Set functions, through the frontal decades, remove the protection cover and
work against preventive discharge or through a non-conductive tool (isolated screw-driver);
replace the cover when finishing.
Power supply board
Position 1
48 Vac, 220 Vac, 240 Vac Position 2
24 Vac, 110 Vac, 120 Vac
Dimensions: 48x48mm (1/16 DIN), depth 100mm
59
48 70
45
45
70
48
100
10
NC
C
NO
NO
C
NC
OUT2
(RELAY’2)
No connected
PWR
SUPPLY
!Apply user’s manual warnings for a correct installation
OUT1
(RELAY 1)
No connected
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VERSION
2 time relays in parallel
2
3
ORDER CODE
GEFRAN spa reserves the right to make any kind of design or functional modification at any moment without prior notice
POWER SUPPLY
24Vdc 0
240Vac (*) 3
24Vac (*)
220Vac (*) 4
2
* Power supply voltage selectable by jumper, see “POWER SUPPLY SELECTION” figure
In conformity to ECC 89/336/CEE and 73/23/CEE with reference to standards:
- CEI-EN 61000-6-2 (immunity in industrial environment) - EN 50081-1 (emission in residential environment) - EN 61010-1 (safety)
55
1 time relay +
1 instantaneous relay (relay 2)
Please, contact GEFRAN sales people for the codes availability.
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• WARNINGS
Read the following warnings before installing, connecting or using the device:
•follow instructions precisely when connecting the device.
•always use cables that are suitable for the voltage and current levels indicated in the technical specifications.
•the device has no ON/OFF switch: it switches on immediately when power is turned on. For safety reasons, devices permanently connected to the power
supply require a two-phase disconnecting switch with proper marking. Such switch must be located near the device and must be easily reachable by the
user. A single switch can control several units.
•if the device is connected to electrically NON-ISOLATED equipment (e.g. thermocouples), a grounding wire must be applied to assure that this connec-
tion is not made directly through the machine structure.
•if the device is used in applications where there is risk of injury to persons and/or damage to machines or materials, it MUST be used with auxiliary alarm
units. You should be able to check the correct operation of such units during normal operation of the device.
•before using the device, the user must check that all device parameters are correctly set in order to avoid injury to persons and/or damage to property.
•the device must NOT be used in inflammable or explosive environments. It may be connected to units operating in such environments only by means of
suitable interfaces in conformity to local safety regulations.
•the device contains components that are sensitive to static electrical discharges. Therefore, take appropriate precautions when handling electronic circuit
boards in order to prevent permanent damage to these components.
Installation: installation category II, pollution level 2, double isolation
•power supply lines must be separated from device input and output lines; always check that the supply voltage matches the voltage indicated on the
device label.
•install the instrumentation separately from the relays and power switching devices
•do not install high-power remote switches, contactors, relays, thyristor power units (particularly if “phase angle”type), motors, etc... in the same cabinet.
•avoid dust, humidity, corrosive gases and heat sources.
•do not close the ventilation holes; working temperature must be in the range of 0...50°C.
If the device has faston terminals, they must be protected and isolated; if the device has screw terminals, wires should be attached at least in pairs.
•Power: supplied from a disconnecting switch with fuse for the device section; path of wires from switch to devices should be as straight as possible; the
same supply should not be used to power relays, contactors, solenoid valves, etc.; if the voltage waveform is strongly distorted by thyristor switching units
or by electric motors, it is recommended that an isolation transformer be used only for the devices, connecting the screen to ground; it is important for the
electrical system to have a good ground connection; voltage between neutral and ground must not exceed 1V and resistance must be less than 6Ohm; if
the supply voltage is highly variable, use a voltage stabilizer for the device; use line filters in the vicinity of high frequency generators or arc welders; power
supply lines must be separated from device input and output lines; always check that the supply voltage matches the voltage indicated on the device label.
•Input and output connections: external connected circuits must have double insulation; to connect analog inputs (TC, RTD) you have to: physically sep-
arate input wiring from power supply wiring, from output wiring, and from power connections; use twisted and screened cables, with screen connected to
ground at only one point; to connect adjustment and alarm outputs (contactors, solenoid valves, motors, fans, etc.), install RC groups (resistor and capac-
itor in series) in parallel with inductive loads that work in AC (Note: all capacitors must conform to VDE standards (class x2) and support at least 220 VAC.
Resistors must be at least 2W); fit a 1N4007 diode in parallel with the coil of inductive loads that operate in DC.
GEFRAN spa will not be held liable for any injury to persons and/or damage to property deriving from tampering, from any incorrect or erro-
neous use, or from any use not conforming to the device specifications.
!WARNING: this symbol indicates danger.
It is seen near the power supply circuit and near high-voltage relay contacts.
Andere gefran Timer Handbücher
