Net Safety SAFEGUARD CONTROLLER, User Manual

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25
SafeGuard Controller User Manual
MAN-0115 Rev 0
R2
R1
ANALOG INPUTS
R3
R4
R7
R6
R5
+EXC-
DC PWR
TB2
R8
JP1
ST-71 ANALOG INPUT BOARD
0010-1115 ASSY# 10-0158
J2
J1
J1 & J2 are interchangable I2C
connectors used to add option
PCB assemblies to the ST-71.
JP1 determines if this 8 channel
Analog Input PCB provides inputs
for CH’s 1-8 or 9-16. 2 PCB
assemblies are required for 16
channels.
Socketed precision resistors R1-R8
are 100 ohm terminations for 4-20mA
inputs. 0-2 VDC voltage inputs may
be accepted by removing resistor.
TB2 is for powering bulk power to transmitters
or other powered input devices. EXC+ is
wired internally to channel “EXC’s” and EXC-
to channel “LO’s”.
CH1/9
EXC HI
CH7/15
HI EXC
CH3/11
EXC LO HI LO
CH5/13
LO HI EXC LO
CH2/10
HI EXC
CH8/16 CH4/12
EXC LO HI LO EXC
CH6/14
EXC LO HI LO HI
8 Channel Analog Input Option #10-0158
EXC LO HI
2 Wire 4-20mA
Transmitter
+Pwr
Sig
3 Wire 4-20mA
Transmitter
EXC LO HI
+Pwr
Sig
Com
Typical 2 & 3 wire 4-20mA
transmitter wiring (connect
correct power, 24VDC or
other, to TB2).
CH # (1-8) CH # (1-8)
Figure 3.3
3.1.2 OPTIONAL DISCRETE RELAY PCB # SG10-0195
An optional Discrete Relay PCB , shown in Figure 3.4, adds eight 5 amp (resistive) form
C relays per sixteen channel alarm group (2 PCB’s required when utilizing more than 8
channels). Each PCB may be configured via rotary switch S1 to function for ALARM 1,
ALARM 2 or ALARM 3/FAULT for channels 1-8 or 9-16. A one (1)-minute time delay
after power, is provided to inhibit relay actuation until the system has had time to
stabilize. Alarm groups, or zones, may be created by connecting adjacent channels
together using JP4 as shown. This creates a wire
OR function with selected channels,
causing any alarm included within the zone to actuate ALL zone relays. Failsafe
operation of SG10-0195 discrete relays may be programmed in the system menu as
J1 & J2 are interchangeable I2C
connectors used to add option PCB
assemblies to the SafeGuard
Controller.
PART # SG10-0158 SafeGuard
Analog Input board.
8 channel Analog Input Board Part # SG10-0158