1.10 Electrical system
Refer to Figures 1-3 and 1-4 which show schematic diagrams of the electrical and control
systems of the iH80, iH600 and iH1000 systems.
1.10.1 Introduction
Refer to Figures 1-3 and 1-4. The iH system has an Electrics Box (1), Electronics Module (3), a
Gas Module (2) and a Pump Display Terminal (4). The iH1000 system also has an inverter
(50). Optionally, your iH system may have an iH Interface Module, an iH Communications
Module, an HCMB pump and other accessories, such as an exhaust temperature sensor (30)
and a Pump Display Module (10).
All of these Modules communicate through a serial data network. Each Module on the
network has a microprocessor, which controls the network communications and also contains
the default setpoints for the sensors in or connected to the Modules (see Section 2).
1.10.2 Electrics box
Refer to Figures 1-3 and 1-4. The external electrical supply (5) is connected to the electrical
supply connector (6) on the Electrics Box (1). The Electrics Box switches the electrical supplies
to the HCDP pump and to the HCMB pump (on an iH600 system). The Electrics Box also
provides the electrical supplies to the other Modules in the iH system. The electrical supply
to the HCMB1000 pump in an iH1000 system is provided by the inverter (50).
The Electrics Box has contactors for the HCDP pump and the HCMB pump (on an
iH600/iH1000 system), pump power and current consumption sensors and short-circuit
protection. The Electrics Box also has a transformer and fuses for the 24 V control circuits
and fuses for the following supplies: iH Interface Module (11) and d.c. electrical supply (47).
Three thermal-type, self-resetting fuses in the Electrics Box protect the d.c. electrical supplies
to the network.
Refer to Figure 1-5 detail D. The rear panel of the Electrics Box has the following lamp and
connections:
Power on lamp (7) This lamp is on when the electrical supply to the
Electrics Box is on.
Tool Interface Module
connector (8)
Use this to connect an iH Tool Interface Module to the iH
system (see Section 8.5.3); or to connect an external
emergency stop circuit to the iH system (see Section
3.15); or to connect a Disconnect Box to the iH system
(see Section 3.21).
LON Interface Connector (9) Use this to connect the iH system to a network.
Electrical supply connector (10) Use this to connect your external electrical supply to the
iH system: refer to Section 3.16.3.
iH Dry Pumping Systems 1-11
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