Aalborg SDPROCs - Manual (Page 9)

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Turn the POWER OFF when not in use.
At the rear of the SDPROC, there is a 25 pin Male Type “D” connector “RELAYS”. The
pin outs are as follows:
b.2.5 Relays Interface
(c) DESCRIPTION
Microprocessor driven digital Command Modules are used in conjunction with any
analog or digital mass flow meters or controllers with 0-5 Vdc input /output signals.
One, two, three and four channel Command Module configurations are available.
Command Modules contain appropriate power supplies, 24x2 alpha-numeric dot
matrix display readout, and four panel buttons which provide complete control over all
the various functions necessary to measure and/or control flow. All channels may be
simultaneously monitored from output signals to a data aquistion or external monitor-
ing device. RS-232 serial communication interface is standard for all models and sup-
ported via a 9 pin “D”-connector at the back panel of the Command Module. RS-232
Software interface commands set allows communications with the unit using either a
custom software program or a “dumb terminal” and provide complete control over all
modes and functions. Optional built-in Ethernet interface allows accessing any
Internet-connected SDPROC from a browser on your work station, PC, or laptop com-
puter. Regardless of where you are, your Command Module is as close as the near-
est browser! There are two levels of Web-based Remote Controls: HTML web server
and TELNET. The flow set points, measured gas flow and associated totalizer data are
scaled directly in engineering units via front panel keypad, RS-232 or Ethernet inter-
face. The following units of measure are supported: %F.S., SLPM, SLPH, SCCM, SCCH,
SCFM, SCFH, SCMM, SCMH, LBPM, LBPH, GRPM, GRPH (NOTE: In order to use mass
based engineering units proper value of the gas density has to be set for correspon-
ding channel).
(d) SPECIFICATIONS
ENVIRONMENTAL (PER IEC 664): Installation Level II; Pollution Degree II
POWER SUPPLY: 85 to 264 VAC (47 to 63 Hz) 2A max.