Danfoss VLT AQUA Drive FC 202 Programming Manual page 71

Parameter Description
on multiple terminals, it only needs to be
logic '1' on one of the terminals to carry out
the function. The digital output signal for
Run Request ([8] Start, [14] Jog or [20] Freeze
output) programmed in parameter group
5-3* Digital Outputs, or parameter group 5-4*
Relays, will not be affected by [52] Run
Permissive.
[53] Hand start A signal applied puts the frequency
converter into Hand mode as if [Hand On]
has been pressed and a normal stop
command is overridden. If disconnecting the
signal, the motor stops. To make any other
start commands valid, assign another digital
input to Auto Start and apply a signal to
this. [Hand On] and [Auto On] have no
impact. [Off] overrides Hand Start and Auto
Start. Press either [Hand On] or [Auto On] to
make Hand Start and Auto Start active again.
If there is no signal on neither Hand Start
nor Auto Start, the motor stops regardless of
any normal Start command applied. If a
signal is applied to both Hand Start and
Auto Start, the function is Auto Start. If
pressing [Off], the motor stops regardless of
signals on Hand Start and Auto Start.
[54] Auto start A signal applied puts the frequency
converter into Auto mode as if [Auto On] has
been pressed. See also [53] Hand Start.
[55] DigiPot Uses the input as an INCREASE signal to the
Increase digital potentiometer function described in
parameter group 3-9* Digital Pot.Meter.
[56] DigiPot Uses the input as a DECREASE signal to the
Decrease digital potentiometer function described in
parameter group 3-9* Digital Pot.Meter
[57] DigiPot Clear Uses the input to CLEAR the digital potenti-
ometer reference described in parameter
group 3-9* Digital Pot.Meter
[60] Counter A (Terminal 29 or 33 only) Input for increment
(up) counting in the SLC counter.
[61] Counter A (Terminal 29 or 33 only) Input for decrement
(down) counting in the SLC counter.
[62] Reset Counter Input for reset of counter A.
A
[63] Counter B (Terminal 29 and 33 only) Input for
(up) increment counting in the SLC counter.
[64] Counter B (Terminal 29 and 33 only) Input for
(down) decrement counting in the SLC counter.
[65] Reset Counter Input for reset of counter B.
B
[66] Sleep Mode Forces the frequency converter into sleep
mode (see parameter group 22-4* Sleep
Mode). Reacts on the rising edge of signal
applied.
[78] Reset Resets all data in
Preventive parameter 16-96 Maintenance Word to 0.
MG20O702
Programming Guide
Maintenance
Word
[80] PTC Card1
[85] Latched
Pump Derag
Options [120] - [138] are related to the cascade controller
functionality. For more information, see parameter group
25-** Cascade Controller.
[120] Lead Pump
Start
[121] Lead Pump
Alternation
[130 Pump1
- Interlock -
138] Pump9
Interlock
Danfoss A/S © Rev. 2014-01-21 All rights reserved.
All digital inputs can be set to [80] PTC Card
1. However, only one digital input must be
set to this choice.
Starts deragging.
Starts/Stops the lead pump (controlled by
the frequency converter). A start also
requires applying a system start signal e.g.
to one of the digital inputs set for [8] Start.
Forces alternation of the lead pump in a
cascade controller. Parameter 25-50 Lead
Pump Alternation must be set to either [2] At
Command or [3] At Staging or At Command.
Parameter 25-51 Alternation Event can be set
to any of the four options.
The function depends on the setting in
parameter 25-06 Number of Pumps. If set to
[0] No, then Pump1 refers to the pump
controlled by relay RELAY1 etc. If set to [1]
Yes, Pump1 refers to the pump controlled by
the frequency converter only (without any of
the build in relays involved) and Pump2 to
the pump controlled by the relay RELAY1.
Variable speed pump (lead) cannot be
interlocked in the basic Cascade Controller.
See Table 3.11
3 3
69