Installation - GE Hydran 201 i Instruction Manual

important because all H201Ci Controllers in a local network share a common
reference with this link.
ELECTRICAL SHOCK HAZARD. Turn off the electric power at the
WARNING
CAUTION
fuse box or service panel before making any electrical connections,
and ensure a proper ground connection is made before connecting
line voltage. Failure to do so can result in property damage, personal
injury and/or death.
3. Because the supervisory link is isolated electrically at both ends, use it rather than the
RS-485 link to cover long distances.
4. Electrical noise is one of the most important factors when selecting the location and
installing a modem.
5. If the analog outputs and relay contacts must be connected to a SCADA system, it is
recommended to install the H201Ci Controller near this system and use the
supervisory links to cover the distance between the H201Ti's and the H201Ci
Controller.
• Transmitting the information using a supervisory link requires only three shielded pairs
of wires (two pairs for the H201Ci-C).
• Transmitting the information between the H201Ci controller and the SCADA system
requires one RS-485 or RS-232 link cable and/or the following pairs for each H201Ti:
– Three pairs for the alarm contacts (High, High-High and system fail alarms)
– One or two pairs for the analog outputs
• Because of its digital nature, the supervisory link provides better protection against
electrical noise.
5.3

INSTALLATION

To install the components of the Hydran 201i System, please consult the following parts of
this manual:
• Hydran 201Ti: See Chapter 6.
• Hydran 201Ci-C: See Chapter 7.
• Hydran 201Ci-1: See Chapter 8.
• Local network: See Section 9.5 on page 9-8.
• Optional modem: See Section 9.6 on page 9-11.
Part 17997 Rev. 6, March 2011
Installation
5-15