ITT HYDROVAR Series User Manual

36
Control Terminals
All control cables connected to the control-unit have to be screened (See chapter 9.3
Recommended Cable Types).
NOTE:
If unscreened control cables are used, signal interference may occur and
could interfere the incoming signals and the function of the HYDROVAR.
Don’t connect the ground of the Control Card to different voltage potentials.
All electronic ground terminals and GND of the RS 485-interface are connected internally.
X3 Digital and Analogue I/O
1
GND, electronic ground
2
Actual value current input Sensor 1
0-20mA / 4-20mA [Ri=50Ω]
3
Power supply for external sensors
24VDC, ** max. 100mA
4
Actual value current input Sensor 2
0-20mA / 4-20mA [Ri=50Ω]
5
Actual value voltage input Sensor 2
*Dig 3 0-10 VDC
6
Actual value voltage input Sensor 1
*Dig 2 0-10 VDC
7
External ON/OFF (release)
Active Low
8
GND, electronic ground
9
Configurable Digital Input 1
Dig 1 Active Low
10
GND, electronic ground
11
Low water
Active Low
12
GND, electronic ground
13
Voltage signal input (Required Value 1)
(Offset) 0-10VDC
14
GND, electronic ground
(Offset)
15
Voltage signal input (Required Value 2)
*Dig 4 0-10VDC
16
GND, electronic ground
(Offset)
17
GND, electronic ground
(Offset)
18
Current signal input (Required Value 1)
(Offset) 0-20mA / 4-20mA [Ri=50Ω]
19
+10V Internal Ref. for Analogue Output
10,00VDC, max. 3mA
20
Analogue Output 1
0-10VDC, max. 2mA
21
Analogue Output 2
4-20mA [Ri=50Ω]
22
GND, electronic ground
(Offset)
23
Current signal input (Required Value 2)
(Offset) 0-20mA / 4-20mA [Ri=50Ω]
X3/
24
+24V Power supply for control inputs
24VDC, ** max. 100mA
* Terminals 5 and 6 can be used as actual value voltage input and even as
Digital Input without any additional configuration.
Also the voltage signal input on terminal X3/15 can be used as Digital Input.
** X3/3 and X3/24 – 24VDC and ∑ max. 100mA
(Offset) These terminals could be used as Required Value and Offset Signal Input.
The configuration could be done in Submenu REQUIRED VALUES [0800] and
Submenu OFFSET [0900].

ITT HYDROVAR Series Specifications

General

Brand	ITT
Model	HYDROVAR Series
Category	Control Unit
Language	English