The unit must be connected to a power circuit protected by a circuit breaker switch or equivalent de-
vice located close to unit, marked accordingly, and easily accessed by the operator.
Figure 1: Unit installation and attachment�
3�3�- UNIT TERMINALS
3�3�1�- List of terminals, DHB-402 model
Table 2:List of terminals on the DHB-402�
Unit terminals
1 :10V +
, Voltage input
9:
AL1
, Alarm 1 relay output (NO)
2:
GND -
, Ground voltage and current input
10:
AL1
, Alarm 1 relay output (Common)
3:
20mA +
, Current input
11:
AL2,
Alarm 2 relay output (NO)
4: 60mV +
, Thermocouple input
12:
AL2
,
Alarm 2 relay output (Common)
5: 60mV -
, Thermocouple input
13, 14:
Not used.
6,7,8:
Resistance-RTD probes
15, 16:
Auxiliary power supply.
DHB-402
1
8
9 10 1112131415 16
Figure 2:Terminals of the DHB-402
Note:
The input, output and power supply lines are galvanically separated from each other.
8
DHB-402 DHB-424
Instruction Manual
