ABB DriveIT ACH550-UH - Internal Timer with Constant Speeds; PRV

ACH550 User’s Manual 45
Start-Up
Internal Timer with Constant Speeds / PRV
This macro configures for applications such as a timed powered roof ventilator
(PRV) which alternates between two constant speeds (constant speed 1 and 2)
based on a built-in timer.
Momentarily activating digital input 3 (DI3) provides a boost function which operates
the motor. See group 36, Timer Functions, for more information on setting up timers.
Parameters Changed Relative to HVAC Default
Parameter Value
Parameter Value
9902 APPLIC MACRO 9 (INT TIMER CS) 3416 SIGNAL 3 MIN -200.0%
1002
EXT2 COMMANDS 0 (NOT SEL) 3417 SIGNAL 3 MAX 200.0%
1103
REF1 SEL 0 (KEYPAD) 3419 OUTPUT 3 DSP UNIT 4 (%)
1106
REF3 SEL 2 (AI2) 3420 OUTPUT 3 MIN -200.0%
1201
CONST SPEED SEL 15 (TIMER1) 3421 OUTPUT 3 MAX 200.0%
1301
MINIMUM AI10.0% 3622 BOOST SEL 3 (DI3)
1401
RELAY OUTPUT 17 (STARTED) 4001 GAIN 1.0
1601
RUN ENABLE 2 (DI2) 4002 INTEGRATION TIME 60.0 s
1609
START ENABLE 25 (DI5) 4101 GAIN 1.0
3207
SUPERV 3 PARAM 0103 (OUTPUT FREQ) 4102 INTEGRATION TIME 60.0 s
3415
SIGNAL 3 PARAM 0105 (TORQUE) 4110 SETPOINT SEL 1 (AI1)
1SCR
2AI1
3AGND
410V
5AI2
6AGND
7AO1
8AO2
9AGND
10 24V
11 GND
12 DCOM1
13 DI1
14 DI2
15 DI3
16 DI4
17 DI5
18 DI6
19 RO1C
20 RO1A
21 RO1B
22 RO2C
23 RO2A
24 RO2B
25 RO3C
26 RO3A
27 RO3B
X1
+
mA
mA
External reference 0(2)…10 V or 0(4)…20 mA
Reference voltage 10 VDC
Output frequency: 0(4)…20 mA
Timer enable: Activate to start/stop drive from timer
Run permissive: Deactivate to stop drive (P 1601)
Timer override: Activate to start drive
Safety interlock 1: Deactivate to stop drive (P 1608)
Safety interlock 2: Deactivate to stop drive (P 1609)
Relay output 1 (P 1401)
Default operation: Started =>19 connected to 21
Relay output 2 (P 1402)
Default operation: Running =>22 connected to 24
Relay output 3 (P 1403)
Default operation: Fault (-1) =>25 connected to 27
Output current: 0(4)…20 mA
Not configured
Analog input circuit common
Not configured
Analog output circuit common
Auxiliary voltage output +24 VDC
Common for DI return signals.
Digital input common for all
Signal cable shield (screen)
Analog input circuit common
(Fault => 25 connected to 26)
J1
AI1: 0(2)
…10 V
AI2: 0(4)
…20 mA
ON
ON
Jumper Settings