Red Lion GCM232 - Manual

1
! ALLOWS COMMUNICATIONS BETWEEN RS-232 CONTROL
EQUIPMENT AND RLC PRODUCTS WITH 20 mA SERIAL
COMMUNICATIONS OPTION
! ISOLATED 20 mA SERIAL COMMUNICATIONS
! FULLY ENCLOSED SCREW-TOGETHER DURABLE PLASTIC
CASE
DESCRIPTION
The GCM232 Serial Converter Module provides the capability of interfacing
Red Lion Controls products with 20 mA current loop serial communications
option to most equipment with RS-232 communications. The isolated 20 mA
current loop connections in the GCM232 allows multiple modules to be wired
into the serial loop. Data format of the RS-232 equipment must be the same as
the Red Lion Controls product (Reference the serial communications section of
the appropriate manual for more details).
An external +12 VDC power source is required to power the GCM232
module. Some Red Lion Controls products have a +12 VDC output which can
be used (Note: Reference appropriate manual to ensure +12 volt output has
enough current capability). The external power source and isolated 20 mA
serial communications loop connections are made via a 6 position terminal
block located inside the module. A 680
Ω
current limiting resistor is provided to
obtain the source current for the Serial Current Loop. Connections for the RS-
232 are made via a 25-pin female D-type connector.
SAFETY SUMMARY
All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
SPECIFICATIONS
1. POWER: + 9 to 28 VDC @ 30 mA max.
Power supplies must be Class 2 or SELV rated.
2. RS-232 VOLTAGES:
Receive Data Pin 2: ± 30 VDC
max.
, mark condition < 0.8 VDC
space condition > 2.4 VDC.
Transmit Data Pin 3: mark condition = -10 VDC (typ).
space condition = +10 VDC (typ).
3. 20 mA CURRENT LOOP:
SO - Output Transistor Rating: V
max
= 25 VDC,
V
sat
= 1 VDC
max
@ 20 mA.
SI - Input Diode Rating: VF = 1.25 VDC
typ
, 1.5 VDC
max
@ 20 mA.
(Note: Reverse polarity protection at SI diode)
4. MAXIMUM CABLE LENGTH:
RS-232 cable: 50 Ft.
20 mA current loop: 4000 Ft.
5. BAUD RATE: 9600 max.
6. ENVIRONMENTAL CONDITIONS:
Operating Temperature: 0 to 50°C
Storage Temperature: -40 to 80°C
Operating and Storage Humidity: 85% max. (non-condensing) from 0°C to
50°C.
Altitude: Up to 2000 meters
7. CERTIFICATIONS AND COMPLIANCES:
SAFETY
IEC 1010-1, EN 61010-1: Safety requirements for electrical equipment for
measurement, control, and laboratory use, Part 1.
EMC EMISSIONS:
Meets EN50081-1: Residential, Commercial and Light Industry
CISPR 22 Radiated and conducted emissions
EMC IMMUNITY:
Meets EN 50082-2: Industrial Environment.
ENV 50140 - Radio-frequency radiated electromagnetic field 1
ENV 50141 - Radio-frequency conducted electromagnetic field 1
EN 61000-4-2 - Electrostatic discharge (ESD) 2
EN 61000-4-4 - Electrical fast transient/burst (EFT) 3
Notes:
1. For operation without loss of performance:
Install power line filter, RLC #LFIL0000 or equivalent.
I/O cables routed in metal conduit connected to earth ground.
2. Anti-static precautions should be observed before handling the device.
3. For operation without loss of performance:
Install power line filter, RLC#LFIL0000 or equivalent.
Refer to EMC Installation Guidelines section of the manual for additional
information.
8. DIMENSIONS: 0.99" H x 2.10" W x 4.32" L
25.2 mm H x 53.4 mm W x 109.8 mm L
9. Shielded cable must be used, connect shield drain wire to earth ground.
MODEL GCM232 - SERIAL CONVERTER MODULE (RS-232C/20 mA CURRENT LOOP)
ORDERING INFORMATION
CAUTION:
Read complete instructions prior to
installation and operation of the unit.
Bulletin No. GCM232-J
Drawing No. LP0214
Released 4/04
Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
www.redlion.net
MODEL NO. DESCRIPTION PART NUMBER
GCM232 Serial Converter Module RS-232 GCM23201