Beijer Electronics Industrial Inverter E2 - Manual (Page 26)

26
7.4. User PI Control Mode
P-15 Digital input 1 (T2) Digital input 2 (T3) Digital input 3 (T4) Analog input (T6) Comments
0, 2,
9..12
Open: Stop (disable)
Closed: Run (enable) Open : PI control
Closed : Preset speed 1
PI feedback analog input Analog input 1
Analog Input 1 can provide
an adjustable PI setpoint, by
setting P-44 = 1
1
Open: Stop (disable)
Closed: Run (enable) Open : PI control
Closed : Analog input 1
PI feedback analog input Analog input 1
Analog Input 1 can provide
an adjustable PI setpoint, by
setting P-44 = 1
3, 7 1)
Open: Stop (disable)
Closed: Run (enable) Open : PI control
Closed : Preset speed 1 External trip input :
Open: Trip, Closed: Run
PI feedback analog input
Connect external thermistor
type PT100 or similar to
digital input 3
4
Normally Open (NO)
Momentary close to run Normally Closed (NC)
Momentary open to stop
PI Feedback Analog Input Analog Input 1
Normally Open (NO)
Momentary close to run
5
Normally Open (NO)
Momentary close to run Normally Closed (NC)
Momentary open to stop Open: PI Control
Closed: Preset Speed 1
PI Feedback Analog Input
Normally Open (NO)
Momentary close to run
6
Normally Open (NO)
Momentary close to run Normally Closed (NC)
Momentary open to stop Open: External Trip
Closed: Run
PI Feedback Analog Input
Normally Open (NO)
Momentary close to run
8
Open: Stop (disable)
Closed: Run (enable) Open : Forward run
Closed : Reverse run
PI feedback analog input Analog input 1
Analog Input 1 can provide
an adjustable PI setpoint, by
setting P-44 = 1
Example Wiring
PI Mode P-12=5, P-15=0 PI Mode P-12=5, P-15=1 PI Mode P-12=5, P-15=3
+24 Volt +24 Volt +24 Volt
Run (Enable) Run (Enable) Run (Enable)
PI / Preset Speed 1 PI / Local (Hand) PI / Preset Speed 1
PI Feedback PI Feedback External Trip
+10 Volt
Local (Hand) Ref PI Feedback
0 Volt 0 Volt 0 Volt
Remote closed loop PI feedback control
with Local Preset speed 1
Remote closed loop PI feedback control with
Local Analog speed input
Remote closed loop PI feedback control with
Local Preset speed 1 and motor thermistor
trip
NOTE By default the PI reference is set for a digital reference level set in P-45.
When using an Analog reference set P-44 = 1 (analog) and connect reference signal to analog input 1 (T6).
The default settings for proportional gain (P-41), integral gain (P-42) and feedback mode (P-43) are suitable for most HVAC and pumping
applications.
The analog reference used for PI controller can also be used as the local speed reference when P15=1.
7.5.
Motor Thermistor Connection
1 : + 24 Volt
The motor thermistor should be connected between terminals 1 and 4 as shown. A
setting of P-15 where Digital Input 3 is programmed for ‘External Trip’ must be used.
The current flow through the thermistor is automatically controlled to prevent a
failure.
4 : External Trip