- Emerson Remote Terminal Unit Instruction Manual

ControlWave Express
Special Instructions for Class I, Division 2 Hazardous Locations
04/24/2006 Appendix A, Document CI-ControlWave Express Page 1 of 2
1. Bristol’s ControlWave Express RTU is listed by Underwriters Laboratories (UL) as nonincendive and
(when installed in a NEMA 1 or better enclosure) is suitable for use in Class I, Division 2, Group C and D
hazardous locations or nonhazardous locations only. Read this document carefully before installing a
nonincendive ControlWave Express RTU. Refer to the ControlWave Express RTU User's Manual for
general information. In the event of a conflict between the ControlWave Express RTU User's Manual
and this document, always follow the instructions in this document.
2. The ControlWave Express RTU includes both nonincendive and unrated field circuits. Unless a circuit
is specifically identified in this document as nonincendive, the circuit is unrated. Unrated circuits must
be wired using Div. 2 wiring methods as specified in article 501-4(b) of the National Electrical Code
(NEC), NFPA 70 for installations in the United States, or as specified in Section 18-152 of the Canadian
Electrical Code for installation in Canada.
3. The power system (solar panel and battery) are not supplied by Bristol Inc. and are therefore unrated
(see paragraph 2). Connection to the solar panel is approved as a nonincendive circuit so that Division 2
wiring methods are not required. The nominal panel voltage must match the nominal battery voltage (6V
or 12V).
4. WARNING: EXPLOSION HAZARD - Do Not disconnect Solar Power from the Battery or any
other power connections within the ControlWave Express Enclosure or any power
connections to optional items such as radio/modem, or cabling to the Display/Keypad unless
the area is known to be nonhazardous.
5. WARNING: EXPLOSION HAZARD - Substitution of major components may impair suitability
for use in Class I, Division 2 environments.
6. WARNING: EXPLOSION HAZARD - The area must be known to be nonhazardous before
servicing/replacing the unit and before installing or removing I/O wiring.
7. WARNING: EXPLOSION HAZARD - Do Not disconnect equipment unless power has been
disconnected and the area is known to be nonhazardous.
8. An optional RTD may be supplied with the ControlWave Express. Connection to the RTD is approved
as a nonincendive circuit, so that Division 2 wiring methods are not required.
9. Signal connectors available for customer wiring are listed in Table A1. Network Com-
munication Port and I/O wiring connections are unrated and must be wired using Div. 2 wiring
methods.
No temporary connections may be made to the Local Port (COM1 -J4 on CPU/System
Controller Board) unless the user ensures that the area is known to be nonhazardous. Field Service
connections to this port are typically temporary, and must be short in duration to ensure that flammable
concentrations do not accumulate while it is in use.
Table A1 -Module/Board Connector Customer Wiring Connectors
Module/Item Connector Wiring Notes
CPU/System Controller
Board
TB1: 6-pin Term. Block Solar Power: User Wired - *
Primary Power: User Wired - *
Auxiliary Output: User Wired - *
CPU/System Controller
Board
TB3: COM2, 8-pin Term Block
RS-232
Remote Comm. Port: For Radio or external
Network Comm. Refer to Model Spec. and ¶ 9
of this document. When used for Network
Comm., use Div. 2 wiring methods.
CPU/System Controller
Board
TB4: COM3, 5-pin Term Block
RS-232/RS-485
RS-232/485 Comm. Port: For external Net-
work Comm. Refer to Model Spec. and ¶ 9 of
this document.
CPU/System Cntrl. Bd.
TB5: 4-pin Term. Block
Pulse Input Interface
Pulse Input Field Wiring: Field I/O wiring
connector is unrated, use Div. 2 wiring
methods. *
CPU/System Cntrl. Bd. TB6: 3-pin Term. Block
RTD Interface
Field Wired: Refer to ¶ 8 of this document. *
CPU/System Controller
Board
J1: 8-pin RJ-45 Jack
10/100Base-T Ethernet Port
10/100Base-T Ethernet Port Jack
For external connection to an Ethernet Hub.
Refer to Model Spec. and ¶ 9 of this document.
CPU/System Controller
Board
J2: 8-pin RJ-45 Female
Connector – Display or
Display/Keypad Intf.
User Connected using Factory Wired Cable - *
CPU/System Controller
Board
J4: COM1, 9-pin Male D-sub
RS-232
RS-232 Comm. Port Connectors: For external
Network Comm. Refer to Model Spec. and ¶ 9
of this document.
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