GE Hydran 201i Instruction Manual page 92

This number is used when accessing a station remotely, or when analyzing and
displaying historic data in the Hydran Host software.
4. All H201Tis in a local network must be set to the same data communication speed
(parameter BaudRate in the Communication submenu; 1,200, 2,400, 4,800 or
9,600 bps). The recommended speed is 9,600 bps.
5. The serial number of each component of the Hydran 201i System, the value of the
H201Ti's parameters and a general description of the installation (transformer
number, power station number, etc.) should be logged and kept in a safe place.
6. The communication parameters must be identical at both ends of the
communication channel. In addition the communication speed of both modems
must be the same as the H201Ti's and the host computer. Refer to the Hydran
Host Software Manual.
6.2.4.2 Cabling
1. The maximum length allowed for each cable is as follows:
• The total maximum length for all supervisory links cables in a single Hydran
201i System (between an H201Ci Controller and its H201Tis) is 1,200m
(4,000ft).
• The total maximum length for all RS-485 link cables between all H201Ti or
between all H201Ci Controllers in a local network is also 1,200m (4,000ft).
• The length of the RS-232 link cable must not exceed 7.7m (25ft) or for USB link
cable it must not exceed 5m (16.4ft).
2. All cables that connect the Hydran 201i System's components should be run in
steel conduits. The shield of all cables should be grounded at one end only or at
the indicated locations. Routing and shielding of the RS-485 link cable are
Page 92
Transformer
Reserved
T1A
T1B
T1C
T2A
T2B
T2C
a. At least one H201Ti in a local network must be set to an
identification number between 1 and 5 (inclusive)
Table 6-1: Example of H201Ti Identification Numbers
Hydran* 201i Instruction Manual
H201Ti Identification
Number
1
a
11
12
13
21
22
23
MA-033 Rev. 14.0, 12-Nov-18