Relay Outputs; Ma Output; Figure 4: Connecting The Sensor Relays; Figure 5: Connecting The 4-20 Ma Output - Pentair Goyen Mecair FFD Installation And Operation Manual

5.4.3 Relay Outputs

WARNING!
The relays and PCB tracks are not mains rated!
Any attempt to use the relays to switch mains could result in damage to the equipment and pose a threat
to the operator!
Referring to Figure 4 below, the contacts are shown in their normal (non-energized) state. Prepare a suitable cable
as described above and connect to the terminals using the second, free cable entry gland. Both relays are of type
SPCO, are volt free, and are not fail-safe in operation (i.e. they are not normally energized).

Figure 4: Connecting the sensor relays

5.4.4 4–20 mA Output
Figure 5: Connecting the 4–20 mA output
The FFD is fitted with a non-isolated 4–20 mA output capable of driving a 250Ω load. Referring to Figure 5, connect
to the 4–20 mA terminals as shown.
The 4–20 mA output is scaled from 0–200% of the high (limit) alarm setting. If, for example, the alarm is set
to 400 units, an emission level of 800 units will give an output current of 20 mA.
12 INSTALLATION AND OPERATION MANUAL – OWNER'S RECORD FFD MANUAL – FILTER FAILURE DETECTOR