Cool Automation CoolMaster 3000T Spezifikationen PDF herunterladen (Seite 35)

Powermonitor 3000 Master Module 35

Publication 1404-IN007F-EN-P - November 2009

All Status Inputs are common to an internal 24V DC source on the SCOM terminal. Status

input terminals S1 and S2 are positive polarity and SCOM is negative polarity.

For optimal EMC performance, we recommend wiring the status inputs by using shielded

cable, Belden 8771 or equivalent, with the cable shield grounded at both ends where possible.

Status Input Connections

Applied resistance versus status state

• Condition 1 is 3.5 kW or less = ON

• Condition 2 is 5.5 kW or greater = Off

Isolation Voltage is 500V status input to case and 500V status input to internal digital

circuitry.

Relay and KYZ Outputs

Control Relay Connections on page 36 shows the Form C relay output connections and an

example of customer wiring to a supply voltage and two loads. Terminal R11 is the common

connection, R14 is the normally-open connection, and R12 is the normally-closed

connection. You must supply the wetting voltage and overcurrent protection for the circuit

connected to the relay output.

Refer to Specifications on page 56

for further information.

TIP

Status Input S2 can be configured for external demand pulse input. See the

Powermonitor 3000 User Manual, publication 1404-UM001

, for more information.

Powermonitor 3000

Master Module

R14

R11

R12

N/C

I1-

I1+

I2-

I2+

I3-

I3+

I4-

I4+

R14

R11

R12 Y

(+)

(-)

GRD

SCOM

DISPLAY

MODULE

SHLD

RS-485

N.O.

Contact

N.O.

Contact

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