IF5740 - Inductive sensor IFM - Free user manual and instructions

USER MANUAL IF5740 IFM

DC2 Function and features This sensor detects metals without contact and indicates their presence by providing a switched signal. Nominal sensing range (Sn) see type label; (value based on standard measurement with mild steel; a shorter sensing range for other metals). Installation

• Flush or non-flush installation (see type label: Sn = Xmm f or Xmm nf) (→ fig. 1)

• Open space around the sensing face when mounted in metal (→ fig. 2).

• Minimum distance when several sensors of the same type are mounted (→ fig. 3, 4). Sn = x mm f Sn = x mm nf

Electrical connection ► Disconnect power before connecting the proximity switch; connection:

• For cables longer than 30 m and wires greater than 0.5 mm² the cable should be laid separately from sources of interference (at a distance of about 50 cm) or a screened cable should be used.

• Connect the load before applying the operating voltage.

• Observe the values for current rating and minimum load current.

• If capacitive loads are used, ensure that the peak current rating is not exceeded.4 ► Do not connect loads of low resistance (e.g. lamps) directly to the sensor. Switch these loads via a relay (→ fig. 6):

► For inductive loads a RC circuit should be connected in parallel to the load (→ fig. 7).

► A load which is too low for 2-wire sensors may lead to malfunction. In such a case a resistor should be connected in parallel to the load (→ fig. 8).

• For series connection consider the voltage drop of each unit.5

► As a rule avoid connecting 2-wire units in parallel (only in exceptional cases, check the safe function, → fig. 9):

► The supply voltage must correspond to the values indicated on the label. If it is not stabilised, a capacitor should be connected (at 24 V and 1 A for example a capacitor of 1000 μF, 50 WV → fig. 10):