Bacharach GDA-1600 オーナーマニュアル
GDA-1600 16-Channel Controller
Instruction 5700-9001
32
Figure 4.4 – Discrete Relay PCB
4.2.4 Catalytic Bead Sensor Initial Setup
Catalytic bead sensors vary widely in power requirements and sensitivity. It is therefore
important to configure each channel to match the sensor with which it will operate.
1.
1.
Apply power to the system prior to connecting sensors. Note this PCB requires
24VDC power be connected to its TB2 terminals 1 & 2 as shown in Figure 4.5.
Suitable fused power is available from the Main I/O board’s TB2 terminal 10 &
12 (see Figure 4.2). Measure the voltage between each channel’s A and R
terminals and set the Voltage Adjust potentiometers for the correct sensor
excitation voltage. This may range from 1.5 volts to 7.5 volts depending upon
sensor specifications.
!
WARNING: Sensors may be damaged by accidental over voltage
conditions. It is recommended the Voltage Adjust potentiometer screws
be covered by a dollop of RTV or similar material after completion of
this procedure to avoid accidental over voltage conditions.
2.
Remove system power and connect sensor wires to the R-C-A terminals. Reapply
system power and confirm correct voltage across each sensor’s A & R terminals.