Air Contaminants; Mounting Clearances; Mounting Area; Ground Conductor - Seco DS9000 Installation & Operation Manual

2.2.4

AIR CONTAMINANTS

Ambient air should not be contaminated with caustic chemical vapors, excessive dust, dirt or
moisture. If such conditions exist, the proper enclosure and cooling methods recommended for such
conditions should be used.
2.2.5

MOUNTING CLEARANCES

Adequate clearance should be allowed for easy access to terminals and adjustments and to facilitate
inspection and maintenance.
2.2.6

MOUNTING AREA

Mounting area should be free of vibration and have sufficient clear air circulation.
2.2.7

GROUND CONDUCTOR

An equipment ground conductor (that is, ground wire) must be connected to the controller case. This
conductor must run unbroken to a drive system wire connection point – or ground bus or grounding
terminal block, as local usage determines. Separate equipment grounding conductors from other
major components in the system must also be run unbroken to a central connection point. These
components include:
•
Motor
•
Isolation transformer case, if used
•
Operator control panel and enclosure, if used.
•
DS9000
•
AC or DC Drive
2.2.8

ELECTRICAL CONNECTIONS

When connecting the equipment grounding conductor to the DS9000 controller case, permanently
connect it to the grounding terminal provided.
2.3

INSTALLATION WIRING

Be sure that the AC power supplied is the voltage and frequency called for on the controller name
plate. Improper voltage may damage the equipment and insufficient current will cause erratic
operation of the controller. Typical connection diagrams are shown in Figures 2.2 and 2.3.
2.3.1

WIRING CODES

All interconnection wiring should be installed in conformance with the National Electrical Code
published by the National Fire Protection Association as well as any other applicable local codes.
2.3.2

SHIELDED CABLE

Shielded cable is required for the pulse generator, and all low-level signal circuits to eliminate the
possibility of electrical interference. Connect the shield to chassis ground at the controller end of the
cable only. There should not be any connections between the DS9000 signal common and any other
ground or common.
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