This article and video will be reviewing the
NIC Inductive Coupler Series from Turck. The NIC series is a contactless
inductive coupler that is a wear free alternative to classic connectivity
solutions. The NIC series can be used for data and power transmission and is
able to transfer up to 12 watts and 500 ma of power across an air gap of
7mm. With a tolerated angle offset up to 15 degrees and a parallel offset up to
5 mm, the couplers can also be fitted in restricted and non-standard mounting
locations while still allowing for full power transfer.
The Inductive couplers can be connected easily. A sensor or
another signal source is connected to the secondary unit, the primary unit is
positioned opposite and connected via a standard four-pole M12 connector to a
controller or a fieldbus device. This basic system can transfer 2 PNP switch
signals via a simple VB2 splitter behind the secondary coupler.
The same system consisting of a primary and secondary coupler
can also be used to transfer signals from IO-Link-Capable measuring sensors.
For this, the primary coupler only has to be connected to an IO-Link master. On
the secondary side, the user connects an appropriate IO-Link sensor or
IO-Link-capable device. These combinations even allow bidirectional IO-Link
communication including all IO-Link features such as parameter settings and
diagnostic data. If the Turck I/O-Hub is connected on the secondary side, the
system can also be used for identification tasks such as on tool changers since
the hub can transfer a unique ID via IO-Link right into the controller.
The 3rd solution variant is used when more than 2
signals need to be transferred. In this case, the IO-Link protocol is used to
transfer up to eight switch signals. In
this way, 8 PNP signals can be transferred with a primary and secondary unit as
well as an I/O-Hub. The 12-pole primary coupler used here acts as the IO-Link
master, and the I/O-Hub as the slave. The primary unit is connected to conventional
PNP inputs of a field device using a 12-pole M12 connector.
Besides the eight PNP sensor signals, the system also
provides 2 poles for diagnostic signals. One signal indicates the presence of
the secondary unit, the 2nd is used for foreign object detection. If
any metal foreign objects such as iron chippings fall between the primary and
the secondary coupler and reduce transmission quality, the fault signal is sent
to the controller so that the error source and be located immediately.
In many applications with frequently changing connections,
the operational readiness of the secondary unit is also important. The
secondary unit of the Turck coupler is operational in less than 10
Extend maintenance intervals, reduce unplanned downtime, and
achieve higher clock speeds with the new inductive coupler series from Turck.