Danfoss VLT Series Programming Manual page 188

Parameter Description
NOTE
The maximum current for the analog outputs 0-10V is 1mA.
NOTE
Where Live Zero Monitoring is used, it is important that any analog inputs not being used for the frequency controller, i.e.
being used as part of the Building Management System decentral I/O, should have their Live Zero function disabled.
Terminal Parameters
Analog inputs
X42/1 26-00 Terminal X42/1
Mode, 26-1*
X42/3 26-01 Terminal X42/3
Mode, 26-2*
X42/5 26-02 Terminal X42/5
Mode, 26-3*
Analog outputs
X42/7 26-4*
X42/9 26-5*
X42/11 26-6*
Table 3.3 Relevant parameters
It is also possible to read the analog inputs, write to the analog outputs and control the relays, using communication via
the serial bus. In this instance, these are the relevant parameters.
Terminal Parameters
Analog inputs (read)
X42/1 18-30 Analog Input
X42/1
X42/3 18-31 Analog Input
X42/3
X42/5 18-32 Analog Input
X42/5
Analog outputs (write)
X42/7 18-33 Analog Out
X42/7 [V]
X42/9 18-34 Analog Out
X42/9 [V]
X42/11 18-35 Analog Out
X42/11 [V]
Table 3.4 Relevant parameters
Setting of on-board Real Time Clock.
The Analog I/O option incorporates a real time clock with battery back-up. This can be used as back up of the clock
function included in the frequency converter as standard. See 3.2.8 0-7* Clock Settings.
The Analog I/O option can be used for the control of devices such as actuators or valves, using the Extended Closed loop
facility, thus removing control from the Building Management System. See 3.19 Main Menu - Extended Closed Loop - Group
21. There are three independent closed loop PID controllers.
®
VLT HVAC Drive Programming Guide
Terminal
Analog inputs
53
54
Analog output
42
Terminal Parameters
Analog inputs (read)
53 16-62 Analog Input 53 Relay 1 Term 1, 2, 3
54 16-64 Analog Input 54 Relay 2 Term 4, 5, 6
Analog output (write)
42 6-53 Terminal 42
Output Bus Control
®
MG.11.CC.02 - VLT is a registered Danfoss trademark
Parameters Terminal
Relays
6-1* Relay 1 Term 1, 2, 3
6-2* Relay 2 Term 4, 5, 6
6-5*
Terminal
Relays
NOTE
The relay outputs must be enabled via
Control Word Bit 11 (Relay 1) and Bit 12
(Relay 2).
3
Parameters
5-4*
5-4*
Parameters
16-71 Relay Output
[bin]
16-71 Relay Output
[bin]
187
3