Artesyn iHP - Digital Current Source (DCS)

iHP Manual 69 | P a g e
iHP Owners Manual
4.4.2 Digital Current Source (DCS)
In this operating mode, user has the capability to control the output current using digital means. A PC or
laptop will be required to change the output current. To change to Digital Current Source (DCS) mode, the
user needs to send below commands to ISOCOMM.
Device Address
ISOCOMM Command
Data1
Data2
00h
D3h
<Module slot or Group #>
0x08h
*Before writing to the ISOCOMM, please ensure that the ISOCOMM Command Write Protect (10h) is disabled.
Where: Data1 please refer to ISOCOMM Command Table.
Data2 “08h” signifies Digital Current Source.
After sending ISOCOMM Command D3h, module will momentarily shutdown, re-initialize and restart. The
shutdown, re-initialize, and restart process takes approximately 1.5 seconds. Since the module will re-
initialize, the Module Operational Command (01h) and Module Write Protect Command (10h) will be set to
enable. IREF will automatically be set to 0A. Table 4-17 list the status of the module command and the
functionality of the commands when configuring the module to DCS mode.
Table 4-17
Module
Comman
d
Command Name
Functional
in DCS
Upon Change to DCS
B1h
VREF
Yes
Set to module's nominal output voltage
B2h
IREF
Yes
Set to 0A
48h
OV_FAULT_LIMIT_MULTIPLIER
Yes
Tracking OV Enable will be based on the set
VREF
OVP multiplier no change from previous value.
49h
OV_WARN_LIMIT_MULTIPLIER
Yes
Tracking OV Warning Enable will be based on
the set VREF
OVP warning multiplier no change from previous
value
4Bh
UV_FAULT_LIMIT_MULTIPLIER
No
Disable. No change from previous value
4Ch
UV_WARN_LIMIT_MULTIPLIER
No
Disable. No change from previous value
4Dh
OC_FAULT_LIMIT_MULTIPLIER
Yes
No change from previous value.
52h
OC_RESPONSE_TYPE
No
Fix to Latch type
B5h
SET_VOLTAGE_RISE_SETTING
No
No change from previous value
B6h
SET_CURRENT_RISE_SETTING
Yes
No change from previous value
B7h
SET_IO_ACTIVE_LEVEL_LOGIC
Yes
No change from previous value
B8h
SET_MODULE__LOAD_TYPE
Yes
Last setting of B8h during DCS
Factory setting of B8h during ACS is Resistive
(01h)
BAh
ANALOG_FILTER_ENABLE
No
No change from previous value
*Functional: If Yes, Module Command is operational during the module mode.
If No, Module Command is not operational during the module mode