Chillgard Monitor; Overview - ICC XLTR-1000 Instruction Manual

ICC

9.5 Chillgard Monitor

9.5.1 Overview

The gateway supports the Chillgard Monitor protocol on both of its RS-485 ports.
This protocol enables non-intrusive monitoring of gas concentration and alarm
information for MSA's Chillgard LC, LE, and RT monitors, and Chemgard
monitor. Some notes of interest are:
• No configuration necessary. Data is automatically mapped into the database
upon selection of the protocol. Refer to section 9.5.2 for more information.
• Network characteristics are fixed at 19200 baud, 8 data bits, 1 start bit, 1
stop bit and no parity.
• May be connected along with an MSA Remote Display module or Remote
Relay module.
• Gas concentration values are automatically scaled to preserve all digits
shown on the display.
• The gateway can be powered from the 12V supply on the Chillgard RT and
Chemgard monitors by connecting J14 terminals 1 (+12V) and 3 (GND) to
terminals "POWER" and "GND" of the gateway, respectively.
• Connect the MSA equipment to the gateway's selected RS-485 port by using
twisted-pair cable connected as shown in Figure 10 and Figure 11 ("RS-485
B" port example shown). Connect the "+" ("RS-485 To Optional Relay
Module" terminal block for LC and LE) or "+ / A" (J15 terminal 2 or 4 for RT
and Chemgard) terminal of the MSA equipment to terminal "A" of the
gateway, the "-" ("RS-485 To Optional Relay Module" terminal block for LC
and LE) or "- / B" (J15 terminal 1 or 3 for RT and Chemgard) terminal to
terminal "B", and the ground terminal "G" ("RS-485 To Optional Relay
Module" terminal block for LC and LE) or "GND" (J14 terminal 3 for RT and
Chemgard) terminal to terminal "GND". Also install jumper wires connecting
terminal "A" to terminal "Y", and terminal "B" to terminal "Z" on the gateway.
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