Technichal Description

Transcription

1 Technichal Description Content 1. General Block Diagram Use of the Z Plug Technical Data AS-Interface M12 pin out Undervoltage detection Mechanical and Environmental Data Standards General The AS-Interface Z Plug AI010 is a slave of the fieldbus system AS-Interface. It serves as network extension utility for networks with up to 200m length without repeaters. Previously only 100m network lengths were possible. Its profile is S-B.A.*.E (2 inputs and 2 outputs). The AS-Interface Z Plug AI010 can furthermore be used as indicator for undervoltage detection. If the AS-Interface supply voltage is within the specified level both inputs D2 and D3 are set. If the supply voltage drops below the lower limit of the specified voltage range the inputs are reset accordingly. Thus a reliable undervoltage detection for the network can be established. Rev. 2, Page 1 of 6

2 Technical Description AS-Interface Z Plug 2. Block Diagram Block Diagram of the AS-Interface Z Plug 3. Use of the Z Plug The AS-Interface Z Plug AI010 can be utilised to extend AS-Interface networks beyond the limit of 100m. With it's help it is possible to double network length to up to 200m without repeaters. In standard networks, where signal quality is below average due to full load or use of non standard network cable it may be possible to reduce telegram error rates with the insertion of the Z Plug. Furthermore the Z Plug has an integrated undervoltage detection circuit that signals a voltage within the specification or below specification via 2 input bits of an AS-Interface slave that is integrated in the Z Plug. Use to extend network length If the AS-Interface Z Plug AI010 is to be used to extend network length, the following installation rule has to be observed: The Z Plug is to be installed at the point in the network that has the longest distance to the AS-Interface power supply unit. It is not necessary to hit this point exactly, a deviation of ±10m is tolerable. Only one Z Plug per network shall be installed. Page 2 of 6 Rev. 2,

3 Technichal Description If repeaters are used, one Z Plug per network segment is needed, if it is longer than 100m. Due to longer signal delay times in networks with more than 100m length it is not possible to install two repeaters in series. The possibility to extend AS-Interface networks as described above also exists for networks where AS-Interface Safety at Work products are installed. The properties of AS-Interface networks without and with Z Plug are summarised in the following table: criterion without Z Plug with Z Plug max. number of slaves possible network structures max. distance Master-Slave without (with) repeaters max. distance Slave-Slave without (with) repeaters star, ring, line, line with taps, tree 100m (300m with two repeaters in series) 100m (500m) star, ring, line, line with taps, tree 200m (400m with one repeater) 200m (600m) use for AS-Interface signal quality improvement If in networks with up to 100m length the telegram error rate is higher than tolerable and if this high telegram error rate is due to a high load of the network and/or a non standard cable in use then the installation of a Z Plug may improve the network communication significantly. This is also true for networks where Safety at Work products are connected. The same installation rules as above apply. use for undervoltage detection At the most distant point in the network the probability is highest that the voltage drop along the line is such that the supply voltage level drops below the lower specified limit. This is particularly the case in networks with a length of up to 200m. The AS-Interface Z Plug AI010, therefore, is equipped with an undervoltage detection circuit that signals a supply voltage below the specified limit by resetting the slave inputs D2 and D3. The detection circuit is designed in such a way that even short undervoltage dips (e.g. in case a high power actuator changes it's state or slip rings have intermittent contact problems) are detected and indicated clearly. Two undervoltage detection voltages are selectable: 26,0V and 22,5V. They are selected via the slave output D1. Input D3 is reset in case the undervoltage dip detected has a duration of more than 5ms. Additionally the input D2 is reset if the duration of the undervoltage situation is Rev. 2, Page 3 of 6

4 Technical Description longer than 50ms. If an input has been resetted it will stay in that state for at least 100ms even if the undervoltage dip was shorter. If the voltage drops below 20V for a longer period of time the integrated AS-Interface IC will perform a reset; in this case the undervoltage signalisation cannot longer be maintained. 4. Technical Data 4.1 AS-Interface AS-Interface Profile: S-B.A.*.E (2 inputs and 2 outputs) reverse voltage protection: yes Display "Power": --- Display "Fault": --- AS-Interface operating voltage range: approx ,6 V 1) max. current consumption: 18 ma power on delay time: < 1 s AS-Interface Specification: V2.11, V3.0 AS-Interface IC ASI-SW AS-Interface certificate: will be applied for 1) Readdressing the unit is possible in the voltage range V only. The use of the data bits is shown in the following table: Input Data Image (IDI): Info (Interface 3) Bit 4 (DI3) Bit 3 (DI2) Bit 2 (DI1) Bit 1 (DI0) 0 U-voltg. >5ms U-voltg. >50ms voltage ok voltage ok Output Data Image (ODI): Info (Interface 3) Bit 4 (DO3) Bit 3 (DO2) Bit 2 (DO1) Bit 1 (DO0) Uswitch < 26,0V Uswitch < 22,5V --- Page 4 of 6 Rev. 2,

5 Technichal Description 4.2 M12 pin out Pin 1: A+ Pin 3: A- For the installation of the Z-Plug on the AS-Interface flat cable an accessory flat cable connector (ICS Art. No. ZS006) is available. 4.3 Undervoltage detection switching point: switching point over temperature range: minimum duration of undervoltage dip: 26,0V ±0,2V or 22,5 ±0,3V (selectable) 26,0V ±0,5V oder 22,5V ±0,5V 5ms or 50ms resp. minimum duration of undervoltage signal: 100ms 4.4 Mechanical and Environmental Data ambient operating temperature range: C protection rating: IP67 max. vibration level (temporarily): 1,5mm Amplitude (10..55Hz) max. shock: 10g All dimensions in mm Rev. 2, Page 5 of 6

6 Technical Description M12 plug according to type JM (IEC ) 5. Standards IEC :2000 This product is designed and manufactured for industrial applications and is not suitable for sale to the general public. Page 6 of 6 Rev. 2,