Connection diagram
The FF-SPS4 can be easily connected to the machine control circuitry due to the FSD monitoring and start and restart interlock
facilities:
Phase
(DC+)
Fuse
Dual channel
(1)
machine control circuit
(recommended circuit)
K1
FSD
Phase
(DC+)
NO P/B
Fuse Fuse
K1 K1
K2
K2
K2 K1
Valves
A4
A4
A1
B1
B2
C1
C2
C5
C3
Optional test
input
Neutral
(DC-)
C5
C4
FF-SPS4
receiver
Signalling
(relay status)
internal
FF-SPS4
emitter
(or jumpered)
OR
Single channel
machine control circuit
fuse
Phase
(DC+)
A5
A5
A2
Fuse
K1
K2
(1)
K2
Valve
FSD
Neutral
(DC-)
Neutral
(DC-)
Test input setting
Jumper position
Jumper position
Jumper
location
(1)
RC (220 Ω + 0.22 µF) for AC interfaces or varistors for DC interfaces.
Test NO test contact (Factory setting) Test NC test contact
FSD: Final Switching Device.
C4
C5
C4
C5
NO P/B: Contact Normally Open of a push-button.
Frequency switches and restart mode selectors
The position of the emission frequency switches must be changed on both the emitter and the receiver units otherwise the system
remains permanently in alarm.
It is recommended to use the start and restart interlock facility when using the equipment as a trip device to control access to a
dangerous zone. The restart push-button should be installed outside the dangerous zone. However, if the application does not
require this facility, it can be removed using the following indications:
Position of the switches
Frequency F1
(50 kHz)
Frequency F2
(40 kHz)
Start & Restart
interlock
Start interlock
Automatic
1
2
1
2
Receiver
O
N
O
N
2 switches for
restart mode
Indicator status
Indicator status
2 switches for
frequency
C3
C5
C3
C5
C3
C5
adjustment
Emitter
OFF
OFF
Indicator status
Indicator status
1 switch for
frequency
adjustment
The equipment is preset on the emission frequency F1 (50kHz) and Start & Restart interlock on delivery.
FF-SPS4 Series
• Industrial Safety Products •
109