Specifications are subject to change without notice (25.06.99) 1
Photoelectrics
Amplifier
Type S1425
Product Description Ordering Key
Type
Special function
Output type
Voltage supply
Amplifier relay for photoelec-
tric switches types MOFR and
MOFT. "S-System" plug-in
housing. Autoadjusted sensi-
tivity and power limit alarm
output (NPN). 2 frequencies
for modulated light selectable
on rotary switch. Break
switching function on relay
output.
• Amplifier relay for photoelectric switches
• Sensitivity automatically adjusted
• Modulated and synchronized light
• 2 selectable frequencies on rotary switch
• Break switching function
• Supply voltage: 24 VDC, 24 VAC, 115 VAC, 230 VAC
• Output 8 A/250 V SPDT relay and 30 mA NPN
• LED-indications for relay, power limit and
power supply ON
• Plug-in module
Type Selection
Ordering no. Ordering no. Ordering no. Ordering no.
Supply: 24 VDC Supply: 24 VAC Supply: 115 VAC Supply: 230 VAC
S 1425 156 724 S 1425 156 024 S 1425 156 115 S 1425 156 230
Supply Specifications
Power supply AC types (UB)
Overvoltage cat. III (IEC 60664)
Rated operational voltage
through pins 2 & 10 230 230 VAC ±15%, 45 to 65 Hz
115 115 VAC ±15%, 45 to 65 Hz
024
24 VAC ±15%, 45 to 65 Hz
Voltage interruption ≤40 ms
Rated insulation voltage (Ui) 250 VAC (cont./elect.)
Rated impulse withstand volt. 4 kV (1.2/50 µs)
Dielectric voltage ≥2.0 kVAC (rms)
Power supply DC types (UB)
Rated operational volt. 724
Pin 2 positive
& pin 10 negative 24 VDC ±15%
Rated insulation voltage (Ui) None
Rated impulse withstand volt. 800 V (1.2/50 ms)
Dielectric voltage None
Rated operational power
AC supply 5 VA @ 230 VAC
DC supply 3 W @ 24 VDC
Output Specifications
Switching function
Contact output current (1&3)
Continuous AC (Ie) AC1 8 A/250 VAC ohmic load
Continuous DC (Ie) DC1 8 A/24 VDC ohmic load
Contact life mechanical 30 x 106operations
Contact life electrical 2,5 x 105operations
Rated insulation voltage (Ui) 250 VAC
(contact/electronics)
Dielectric strength
Dielectric voltage 2 kVAC (rms)
Rated impulse withstand volt. 4 kV (1.2/50 µs)
NPN Output (Pin 9)
Continuous (Ie) 30 mA/30 VDC
Short-time (I) 50 mA/30 VDC
S 1425 156 724
2Specifications are subject to change without notice (25.06.99)
S1425
General Specifications
Transmitter Pins 5 & 7 (pin 7 negative)
Supply voltage (open loop) 8V square wave
Current ≤200 mA short-circuit
protected
Output resistance 27 Ω
Receiver Pins 6 & 8 (pin 8 negative)
Supply voltage (open loop) 8 VDC
Short-circuit current 18 mA
Input resistance 470 Ω
Modulating frequency
Transmitter
Frequency A Approx. 5 kHz
Frequency B Approx. 3 kHz
Operating frequency (f) 10 Hz
Response time (output)
(at 80% damping)
OFF-ON (tON) Max. 150 ms
ON-OFF (tOFF) Max. 50 ms
Auto-adjust time constant 1,8 s
Power ON delay Approx. 0.6 s
Output function Break switching
Indication
Supply ON LED, green
Output ON LED, yellow
Power limit LED, red
Environment
Installation category II (IEC 60664)
Degree of protection IP 20 (IEC 60529, 60947-1)
Pollution degree
II (IEC 60664/60664A, 60947-1)
Operating temperature -20° to +50°C (-4° to +122°F)
Storage temperature
-50° to +85°C (-58° to +185°F)
Weight
AC supply 200 g
DC supply 125 g
CE-marking Yes
Mode of Operation
S 1425 has a constant output
level on pins 5-7. The regula-
tor on the receiver (pins 6-8)
keeps a constant amplitude
on the input to the PLL device.
Therefore a slow damping of
the signal will not change the
status of the relay. A fast
damping of the signal (approx.
80%) will change the status of
the relay (beam interrupted). If
the damping is maintained,
the regulator will increase the
amplitude on the PLL device,
and normal function is ob-
tained.
To achieve optimum perform-
ance by the auto-adjust sys-
tem, the following operating
ranges must be obtained:
MOFT5:
Distance approx. 1 to 2.5 m
MOFT20:
Distance approx. 2.5 to 7 m
MOFT50:
Distance approx. 7 to 20 m
Wiring Diagrams
Operation Diagram
Power supply
Light beam
Power limit
level
Relay output
Power limit
output
Object present
Accessories
- 11 pole circular socket S111, S111A, S411, ZPD11
- Socket cover for S111 BB1
- Socket cover for S411 BB4
- Hold down spring HF
- Mounting rack SM13
- Front panel mounting bezel FRS2
- Potentiometer knob lock PL1
Delivery Contents
•Amplifier
•Packaging: styropor box
+
-Power
limit
output
Power
supply
