HygroMatik DBV-U126P, Operation And Maintenance Instructions

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DBV-(U)P 4.3
4.4 Safety Interlock
Floating interlock contacts of a safety chain, such
as maximum hygrostat, flow control switch,
pressure switch etc. are to be installed in series
between terminals 1 and 2.
Attention: Terminals 1 and 2 require
potential free contacts. No power is to
be supplied to 1+2.
1 2
ϕ
max
V
4.5 Control
Attention: The unit shall be controlled
so that it will not operate the breaker
more than 4 times per minute (this will
otherwise lead to destruction of the
breaker).
The HYGROMATIK control type DBV-P can be
programmed for the following control modes.
Parameter
Control (U6) has to be set according to
chapter 1.14 "Parameter Settings using Code“.
DBV- (U) P Controls (U6)
1step Control
Proportional Control with External Controller
Proportional Control with Integral Controller
Proportional Control with Integral Controller and
Proportional Max. Limiter
4.5.1 1step Control
The hygrostat should be installed in series with the
terminals of the safety chain between 1 and 2.
Attention: Terminals 1 and 2 require
potential free contacts. No power is to be
supplied to 1+2.
1 2
ϕ
max
ϕ
4.5.2 Proportional Control with
External Controller
Note: If the control signal wires pick up
stray induction signals from surrounding
power cables the humidifier might
operate erratically. It is therefore
recommended to use shielded control
wiring with the shielding earthed at the
controller.
The parameter Control signal (E3) has to be set
according to chapter 1.14 "Parameter Settings
using Code" to match the humidifier to the control
signal.
External control Signal (E3)
0(2) - 10 V DC (min. 0,5 mA)
0(4) - 20 V DC (min. 1,0 mA)
0 - 20 V DC (Phase angle, Staefa)
0 - 140
Ω
*
0(2) - 10 mA DC (min. 2,5 V)
0(4) - 20 mA DC (min. 5 V)
The standard setting is 0(2)..10 VDC.
The humidifier switches off at 2 V and on at 2,5 V.
Connect to terminal block according to diagram:
1 2 4 5
Controller
- +
(y)
(
⊥ ⊥⊥ ⊥
)
Terminal block
External control signal
! ! ! !