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Brand: GE
Type:VMIVME-7750
Origin: the United States
Warranty: 365 days
Colour: new/used
Shipping method: Courier delivery
Connect the optical ModuleBus to the optical contacts (Tx1/Rx1) at the bottom of the processor unit (see Figure 10 on page 43). For information regarding optical cable selection and cable length, refer to the S800 I/O documentation. 7. Provide battery backup by connecting the PM891 unit to the external SB822 battery unit. Install it according to the instructions in Installing the SB822 Rechargeable External Battery Unit on page 144. Communication Ports - CN1 and CN2 The control network connects to one or two RJ45 connectors (CN1 and CN2) depending on network option (single or redundant). Use an RJ45 connector for IEEE802.3 (Ethernet) for connecting to a category 5 Shielded Twisted Pair cable (STP class 5). The connection to the optical ModuleBus is identical to that for the processor unit and for the FCI in S800 I/O (see Figure 54 on page 160.) Class 5, or higher, cable 10/100BaseT/TX max 100 m (110 yd). ABB recommends the use of optical fiber in an industrial environment, for example 62.5/125 100BaseFX, max. distance 1500 m (1600 yd)
The COM4 port is an RS-232C port, opto-isolated and without modem signals. Connect the Control Builder to this port when connecting directly to the controller, or, when not required, without the need use the remote tool connection through the Control Network.
This topic does not apply to the installation of PM891 unit in redundant configuration. See Installing the PM891 Processor Unit in Redundant Configuration on page 94. Note that in redundant CPU configuration, COM3 and the electrical ModuleBus on the baseplate can not be used.
In redundant configuration two PM861/PM864/PM865/PM866 units are mounted onto two separate DIN-rails. If sufficient space is available, the units can be mounted onto the same DIN-rail
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