Zener MSC-3 User Manual

IM00120
40
IM00120
Quick Setup for Cong 3.
Application: Stair pressurisation fan with external PID
This setup is for a typical HVAC stair pressurisation fan application that requires air pressure control
using an air pressure transducer and a PID controller external to the MSC-3. The MSC-3 is congured
to run in essential services override (ESO) mode. Prior to commissioning, you will need to know the type
of speed signal that is to be used (0-10V, 4-20mA etc) between the output of the external PID controller
and the MSC-3.
Procedure
STEP 1 Complete the power wiring according to the instructions on pages 9 to 18
STEP 2 Connect the control wiring as shown.
CAUTION
Do not connect the wire
to terminal 6 yet.
The terminal conguration
should not be changed
while the MSC-3 is
enabled.
1 2 3 4 5 6 7 8 9 10 11
+5V D1 D2 D3 D4 EN COM SCN Vref IN+ IN -
MSC - 3 Control Board
DIG
Power up start
-
+
External PID controller output
i
Essential Services
Override (ESO)
See page 51 for
detailed information
STEP 3 Connect the signal wiring from the external PID controller as shown. Consult the PID
controller manufacturer’s literature for other connections and power supples required by
the PID controller.
STEP 4 Follow the instructions on page 47 for MSC-3 startup, setting the parameters
according to the table below. Alternate values may be used to suit the application.
Menu Menu Item Suggested Setting
Page for detailed
information
G00 INPUT/OUTPUT G01 Inpt fxn CFG
(Input terminal
conguration)
I02 ~STOP = D1(2) 91
I00 FWD & LATCH = D2(3) 90
I08 ESO = D3(4) 93
I11 REMOTE = D4(5) 93
G00 INPUT/OUTPUT G03 RL1 G030 RL1 Signal = RUN (default) 98
G04 Rl2 G040 RL2 Signal = TRIP (default) 100
B00 MOTOR B01 MOTOR VOLTS Motor nameplate voltage 71
B02 MOTOR AMPS Motor nameplate amps 71
B03 MOTOR HZ Motor nameplate frequency 71
B04 MOTOR RPM Motor nameplate RPM 72
D00 PROTECTION D01 CURRENT LIM Motor nameplate current +10% 78
D02 I2t Thermal overload Motor nameplate current 78
E00 STOP/START E03 AUTO RESTART E030 ARs ALLOWED = 5 82
E04 Reset by PF ENABLED 83
F00 REFERENCES F03 ESO REF AI(10,11) 86
C00 PERFORMANCE C03 RAMP C030 ACCEL TIME = 10 sec 74
C031 DECEL TIME = 10 sec 74
C034 ESO RAMP = 10 sec 75
Step 5 Now connect the wire to terminal 6.
End of procedure

Zener MSC-3 Specifications

General

Brand	Zener
Model	MSC-3
Category	Controller
Language	English