Honeywell VRX180 - Manual (Page 37)

Installation
Video Recorder - User Manual 23
2.5.4 Digital Inputs Boards
Three types of Digital Input (DI) boards accept three types of input signals.
1. Logic
Input
2. DC Input
3. AC Input
Each type is described on the following pages. Figure 2-3 shows the terminal block connections for all
DI boards. See Section 1 for details on all I/O board specifications.
12
11
10
9
8
7
6
5
4
3
2
1
DI 6
DI 5
DI 2
DI 1
DI 4
DI 3
Contact Closure
+
-
24 VDC
120/240 VAC
L1
L2
Logic input
DC input
AC input
SLOT ID
Figure 2-3 DI Board Terminal Block Connections
2.5.5 Analog Outputs
The Analog Output (AO) board provides four outputs at 0 to 20 mA (configurable for 4 to 20 mA or any
span between 0 to 20 mA). When not used for an analog output, an output channel may be used to
power a transmitter with 24 Vdc power. The video recorder will support up to two AO boards, for a total
of eight outputs.
Figure 2-4 shows the terminal connections for the AO board. See Section 1 for details
on all I/O board specifications.