SMARTEYE Multi-netx, User Manual

Page: 10 / 76

SMARTEYE
Netx Ethernet IP Control Unit User Manual Page 4
Filename: netx IP Platform User Manual R0 .doc
…
In Control
A
M
6.0 Reader Wiring and Mounting
6.1 Reader Wiring
A Smarteye reader features a six-foot cable pre-wired to each of its three receiver photoeyes and
a twenty-five foot cable pre-wired to the sender. The photoeye cables typically terminate at a
remote field junction box near the reader assembly. The three receiver cables are labeled A, B,
or C respectively. The sender photoeye has a single unlabeled cable.
The S-netx provides a cage clamp connector for the reader connection. The T-netx and Multi-
netx provide spring clamp connectors for the reader connection.
Note:
1. Readers are delivered with the white signal wires of the receivers terminated to the reader
connector. The black signal wires are not used.
2. All references to + and - refer to 24VDC supplied via the reader port.
6.2 Local Reader Mounting (S-netx only)
Due to its intended use focusing on highly distributed control systems, the Smarteye reader is
typically wired for local mounting to the S-netx (no junction box required) and is shipped pre-
wired unless requested otherwise. The three receiver photoeyes and the sender photoeye are
routed through the four-hole reader cable grommet and terminated on the cage clamp connector.
Please note that the grommet nut can be slipped over the connector for ease of assembly.
Connection details can be found in the appendix.
6.3 Remote Reader Mounting (S-netx, T-netx and Multi-netx)
The Smarteye reader can also be remotely mounted from the network control unit (S-netx, T-
netx or Multi-netx). A remote field junction box must be located within six cable feet from the
receiver assembly. This remote junction box should have eight terminals labeled: +, +, -, -, A, B,
C, and SH (shield).
Belden 9773 (3 shielded pairs, 18 gauge) is recommended for connecting the network control
unit to the remote junction box. For the S-netx, a remotely mounted reader will also need the
four-hole reader cable grommet replaced with a single-hole grommet, which is shipped with each
unit. Maximum remote mounting distance is 1500 feet.
The shield (drain) wires of the Belden 9773 cable are normally connected to 24V ground at the
network control unit via jumper block J1 on the network control unit circuit card. This is the
standard factory configuration. If the environment is electrically noisy, then it may be necessary
to connect the shield to 24V ground at the remote reader's junction box. This can be
accomplished by installing a jumper wire from the ‘SH’ terminal to the ‘-‘ terminal in the remote
junction box. Do not connect the shield at both ends of the cable. Remove the jumper block
from J1 at the network control unit, if the jumper wire is used at the remote junction box.
Smarteye Corporation does not recommend that this shield ever be connected to chassis ground.