Proper cabling is crucial for the trouble-free operation of the Irinos system. You should therefore observe the following rules:

oRoute all cables away from potential sources of interference, such as inverters or motor cables.

oAvoid unnecessarily long cables. In particular, avoid ‘cable loops’.

oAll measurement cables and the ILink cables must be adequately shielded.

oUse the locking mechanisms on the connectors.

oAvoid mechanical stresses that could affect the cables.

When using the system in drag chains, ensure that the cables are suitable for this purpose.

Fit protective caps to all unused connectors.

Connect the cables whilst the power is switched off.

The order in which the connections are made is irrelevant. However, for ease of access, the following order is recommended:

a)Establish the Ethernet connection.

b)Establish the SC-Link connection.

c)Connect the probe and the digital inputs/outputs.

SC-Link cabling

Any changes to the SC-Link cabling must only be carried out whilst the system is switched off. Even a very short interruption to the SC-Link cabling will result in a communication error. The system will then need to be restarted.

Basics

oThe SC-Link interface is a bus system with a line topology. Each Irinos box has 2 SC-Link connectors.

oTwo Irinos boxes are always connected to each other via an ILink cable. On the first and last Irinos boxes, one SC-Link connector remains unused. Use the protective caps supplied with the master box to protect these two connectors.

oManual termination is not required. The Irinos system automatically carries out the necessary termination when switched on.

oIn principle, it does not matter which of the two SC-Link connectors an ILink cable is plugged into. They are technically identical.

oThe only exception is the Master Box when it is not used as the first or last box. In this case, the connection determines the order of addressing (= numbering) of the Slave Boxes. Numbering begins with the Slave Boxes connected to the upper SC-Link connector.

oIt is therefore recommended that the Master Box is always used as the first or last Irinos box. This means that the connection order does not need to be taken into account when replacing the Master Box. The IR-PU-xx-HWS-x power supply unit is an exception to this, as it is not addressed.

oThe maximum permissible total length of the ILink cabling is 20 m.

oPlease note that only one Irinos box with an Ethernet interface is permitted per Irinos system. SC-Link communication will not function if there are multiple master boxes.

oAn Irinos system may consist of a maximum of 12 Irinos boxes (including the master box).

Procedure

Connect adjacent Irinos boxes using an ILink connection cable. Take particular care to ensure that the DSUB connectors are securely locked in place with both screw bolts. Fit the protective caps supplied with the master box to the two DSUB sockets that are not in use.

Ethernet connection

The Irinos system’s Ethernet interface is a standard Ethernet interface, such as those also used for IT networking, for example. The Irinos system can therefore, in principle, also be used with standard Ethernet switches.

Data communication between the Irinos system and the PC is designed to be fault-tolerant, so that if a packet is lost, a retransmission is carried out automatically. However, this retransmission always results in a significant delay in the availability of the measured values. A retransmission should therefore be the exception rather than the rule in practice.

To minimise the number of retransmissions, a direct connection between the Irinos system and the PC is therefore strongly recommended. To do this, connect the Irinos system’s Ethernet port to a free Ethernet port on the PC. Experience has shown that retransmissions thus practically never occur.

The Irinos system is not designed to operate via routers, VPN connections, wireless connections (Wi-Fi) or similar means.

The Irinos system’s Ethernet interface features automatic ‘crossover detection’. It therefore makes no difference whether a standard Ethernet cable or a crossover Ethernet cable is used.

The Irinos system’s DHCP server is enabled by default.

Before the Irinos box is used in an IT network, the DHCP server must be disabled via a direct connection. This is done using the Irinos tool. For further information, please refer to the Irinos tool documentation.

Connecting inductive probes

Connect the probes to the designated measurement inputs. Please note:

Inductive probes must only be connected to the appropriate Irinos box, the SC-TFV.
Connect ‘Tesa half-bridge’ probes only to the Irinos box SC-TFV-8-TESA-… .
Connect ‘Solartron LVDT’ probes only to the Irinos Box SC-TFV-8-SOLVDT-...
You can also identify the type from the labelling on the box.

Fit a protective cap to all unused input sockets. These are available separately.

Important: The probe manufacturer does not necessarily specify the type of probe used. The type can only be determined from the probe’s technical data. The following table provides practical guidance for common types:

Manufacturer	Probe name	Key Technical Specifications	Probe type
TESA	GT21, GT22, GT61, GT62, ...	13kHz, 3Veff, 2kOhm, standard sensitivity GT21 73,75mV/V/mm	TESA halfbridge
Hirt	Series Txxx, i.e. T101F	13kHz, 3Veff, 2kOhm, standard sensitivity T101F 73,75mV/V/mm	TESA halfbridge
Solartron	Series SH and SHT (SH series recommended)	13kHz, 3Veff, 2kOhm	TESA halfbridge
Solartron	Series S	5kHz	Solartron LVDT
Mahr	1301	20kHz	Feinprüf/Mahr
Knäbel	KMT	13kHz, 3Veff, 2kOhm	TESA halfbridge
Knäbel	IET	50kHz, 1,5Veff, 10kOhm	Knäbel IET

Connecting incremental probes / encoders

Connect the incremental encoders (1Vpp or TTL/RS422) to the designated input sockets. Please note the following:

The same connector is used for the SC-Link interface as for the incremental encoder inputs.

The pin assignment of the SC-Link connector is designed so that 1Vpp / TTL incremental encoders with the standard Heidenhain pin assignment are not damaged if they are accidentally plugged into the socket of the SC-Link interface. This may not be the case for specialised encoders with a different pin assignment.

You should therefore only ever connect incremental encoders to the input sockets intended for this purpose.

The measurement inputs are pre-configured for 1Vpp or TTL/RS422 incremental encoders. If the other type is connected, the measured value will not be recorded correctly. However, it is not possible to damage the measurement input or the incremental encoder.

Fit a protective cap to all unused input sockets. These are available separately.

Connecting temperature sensors

Connect the temperature sensors to the designated input sockets. Ensure correct polarity: both the plug and the socket have one narrow and one wide contact.