ABB ACH550-UH HVAC, User Manual

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ACH550-UH User’s Manual 1-101
Parameters
1209 TIMED MODE SEL 1, 2 1 2 (
CS
1/2/3/4)

Defines timed function activated constant speed mode. Timed function can be used to change between the external
reference and constant speeds when parameter 1201
CONST SPEED SEL
= 15…18 (
TIMED FUNC
1…4) or 19 (
TIMED
FUN
1&2).
1 =
EXT
/
CS
1/2/3
• If parameter 1201 = 15…18 (
TIMED FUNC
1…4), selects an external speed when this timed function (1…4) is not
active and selects Constant speed 1 when it is active.
• If parameter 1201 = 19 (
TIMED FUN
1&2), selects an external speed when neither timed function is active, selects
Constant speed 1 when only Timed function 1 is active, selects Constant speed 2 when only Timed function 2 is
active and selects Constant speed 3 when both Timed functions 1 and 2 are active.
2 =
CS
1/2/3/4
• If parameter 1201 = 15…18 (
TIMED FUNC
1…4), selects Constant speed 1 when this timed function (1…4) is not
active and selects Constant speed 2 when it is active.
• If parameter 1201 = 19 (
TIMED FUN
1&2), selects Constant speed 1 when neither timed function is active, selects
Constant speed 2 when only Timed function 1 is active, selects Constant speed 3 when only Timed function 2 is
active and selects Constant speed 4 when both Timed functions 1 and 2 are active.
Group 12: Constant Speeds
Code Description Range Resolution Default S
TIMED FUNCTION
1…4 Function
0 External reference
1 Constant speed 1 (1202)
TIMED FUNCTION
1
TIMED FUNCTION
2 Function
0 0 External reference
1 0 Constant speed 1 (1202)
0 1 Constant speed 2 (1203)
1 1 Constant speed 3 (1204)
TIMED FUNCTION
1…4 Function
0 Constant speed 1 (1202)
1 Constant speed 2 (1203)
TIMED FUNCTION
1
TIMED FUNCTION
2 Function
0 0 Constant speed 1 (1202)
1 0 Constant speed 2 (1203)
0 1 Constant speed 3 (1204)
1 1 Constant speed 4 (1205)