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Chapter 1 — Installation and Initial Setup
Electrical connections
Electrical connections to the Humilab are made on the rear panel
as shown in Figure 3.
A. Analog outputs.
Analog outputs are available to the operator via
the DB-15 connector located on the rear I/O panel. A cable suitable
for connecting to a terminal block is included. The connector
pinout is listed below.
DB-15 Pin No.
Function
1
RH 4–20 mA (+)
2
RH 0–5 V (+)
3
Temp 4–20 mA (+)
4
N/C
5
Temp 0–5V (+)
6
Status
7
N/C
8
N/C
9
Service
10
Gnd (Rtn)
11
N/C
12
N/C
13
N/C
14
N/C
15
N/C
ANALOG OUTPUTS
REFERENCE RS-232
CONTROLLER RS-232
LINE
A
B
C
D
Figure 3 — Humilab electrical connections
